मराठी

The Question in this Section is Based on What is Stated Or Implied in the Passage Given Below. for the Question, Choose the Option that Most Accurately and Completely Answers the Question. - Mathematics

Advertisements
Advertisements

प्रश्न

The question in this section is based on what is stated or implied in the passage given below. For the question, choose the option that most accurately and completely answers the question. 

The words invention and Innovation are closely linked, but they are not interchangeable. The inventor is a genius who uses his intellect, imagination, time and resources to create something that does not exist. But this invention may or may not be of utility to the masses. It is the enterprising innovator who uses various resources, skills and time to make the invention available for use. The innovator might use the invention as it is, modifies it or even blend two or more inventions to make one marketable product. A great example is that of the iPhone which is a combination of various inventions. If an invention is the result of countless trials and errors, so can be the case with innovation. Not every attempt to make an invention is successful. Not every innovation sees the light of the day. Benjamin Franklin had the belief that success doesn‘t come without challenge, mistake, and in a few cases failure.  

One of the world‘s most famous innovators, Steve Jobs says, ―Sometimes when you innovate, you make mistakes. It is best to admit them quickly and get on with improving your other innovations.‖ Thus, inventors and innovators have to be intrepid enough to take risks; consider failures as stepping stones and not stumbling blocks. Some inventions are the result of a keen observation or a simple discovery. The inventor of Velcro, also called the zipless zipper, is the Swiss engineer George de Mestral. He was hiking in the woods when he found burrs clinging to his clothes and his dog‘s fur. Back at home, he studied the burrs. He discovered that each burr was a collection of tiny hooks which made it cling on to another object. A few years later, he made and patented the strips of fabric that came to us like Velcro. The world of inventions and innovations is a competitive one. But the race does not end here; it is also prevalent in the case of getting intellectual property rights. There have been inventors who failed to get a single patent while there have been some who managed to amass numerous patents in their lifetime. Thomas Edison had 1,093 patents to his credit! We relate the telephone with Alexander Graham Bell. It is believed that around the same time, Antonio Meucci had also designed the telephone, but due to a lack of resources and various hardships, he could not proceed with the patent of his invention. It is also believed that Elisha Gray had made a design for the telephone and applied for the patent at the U.S. patent office on the same day as Graham Bell did. By sheer chance, Graham‘s lawyer‘s turn to file the papers came first. Hence, Graham was granted the first patent for the telephone. It is not easy, and at times almost impossible, for an inventor to be an innovator too. There are very few like Thomas Edison who graduated from being an incredible inventor to a successful manufacturer and businessman with brilliant marketing skills. While innovations that have helped to enhance the quality of life are laudable, equally laudable are the inventions that laid the foundation of these very innovations. 

Which of the following is Untrue? 

पर्याय

  • Inventors may not be innovators. 

  • Innovators are not expected to be enterprising. 

  • To get a patent, the applicant has to follow a legal process. 

  • Intellectual property rights are not always easy to get. 

MCQ

उत्तर

Innovators are not expected to be enterprising. 

shaalaa.com
Comprehension Passages (Entrance Exams)
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2018-2019 (May) Set 1

संबंधित प्रश्‍न

Read the given passage carefully and answer the questions given after the passage:

1. Often, we passionately pursue matters that in the future appear to be contradictory to our real intention or nature; and triumph is followed by remorse or regret. There are numerous examples of such a trend in the annals of history and contemporary life. 

2. Alfred Nobel was the son of Immanuel Nobel, an inventor who experimented extensively with explosives. Alfred too carried out research and experiments with a large range of chemicals; he found new methods to blast rocks for the construction of roads and bridges; he was engaged in the development of technology and different weapons; his life revolved around rockets and cannons and gun powder. The ingenuity of the scientist brought him enough wealth to buy the Bofors armament plant in Sweden.

3. Paradoxically, Nobel's life was a busy one yet he was lonely; and as he grew older, he began suffering from guilt of having invented the dynamite that was being used for destructive purposes. He set aside a huge part of his wealth to institute Nobel Prizes. Besides honouring men and women for their extraordinary achievements in physics, chemistry, medicine and literature, he wished to honour people who worked for the promotion of peace.

4. It's strange that the very man whose name was closely connected with explosives and inventions that helped in waging wars willed a large part of his earnings for the people who work for the promotion of peace and the benefit of mankind. The Nobel Peace Prize is intended for a person who has accomplished the best work for fraternity among nations, for abolition or reduction of war and for promotion of peace.

5. Another example that comes to one's mind is that of Albert Einstein. In 1939, fearing that the Nazis would win the race to build the world's first atomic bomb, Einstein urged President Franklin D Roosevelt to launch an American programme on nuclear research. The matter was considered and a project called the Manhattan Project was initiated. The project involved intense nuclear research the construction of the world's first atomic bomb. All this while, Einstein had the impression that the bomb would be used to protect the world from the Nazis. But in 1945, when Hiroshima was bombed to end World War II, Einstein was deeply grieved and he regretted his endorsement of the need for nuclear research.

6. He also stated that had he known that the Germans would be unsuccessful in making the atomic bomb, he would have probably never recommended making one. In 1947, Einstein began working for the cause of disarmament. But, Einstein's name still continues to be linked with the bomb. 
Man's fluctuating thoughts, changing opinions, varying opportunities keep the mind in a state of flux. Hence, the paradox of life: it's certain that nothing is certain in life.

Alfred established the Nobel Prizes to ____________.


Direction: Answer the question, based on the following information. Indicate which of the statements given with that particular question, is consistent with the information given in the passage below.

A Holistic Viewpoint

It is now recognised by modern science that the universe at the subatomic level does not have solid material objects, but consists of only wavelike patterns which represent probabilities of interconnections between other interconnections, all of which together constitute an inseparable web of inter-relationships constituting the entire universe. Fritj of Capra, therefore, views the universe not as “an assemblage of independent parts” but as “a dynamic web of inter-related events” in which each part of the web determines the structure of the whole. Geoffrey Chew views such inter-penetrating and interdependent relationships in the universe in terms of a “bootstrap” theory which implies that all forces in the universe are inseparably linked together, every part affects every other part, and the whole world is held together so to say, by bootstraps. David Bohm refers to a holographic concept which implies not only that every part is connected with every other part within the whole but also that, in a sense, each part contains the whole. This, according to David Bohm, recognises the “Undivided wholeness” of the entire universe instead of the classical idea of the analysability of the world into separately and independently existent parts. Choose the appropriate option


Direction: Read the passage given below. Choose the best options for the Question. IOT has had an impact across all fields, be it industries, government, small or large businesses and even for Personal Consumption.

What is IOT (Internet of things) you might ask? It’s been a growing topic of conversation for some time now. Put in the simplest term it means anything that has an on and off button and is connected to the internet for receiving, analyzing, storing or sending data. This could mean anything, from the watch that you wear to airplanes that can be controlled from a remote location. According to the analyst firm Gartner, by the year 2020, we’ll have over 26 billion connected devices. That could mean people to people, people connected to things and things connected to things.The new rule of the future is going to be “Anything that can be connected will be connected”. Take for example that when you set an alarm to wake up and that alarm goes off it not only wakes you up but also brews your coffee, sets the right temperature of water for your bath, puts on the television to bring you the latest updates from around the globe and all this before you even put a foot out of your bed. This is all done by simply getting the network of interconnected things/devices that have embedded sensors, network connectivity, software and necessary electronics that collect and exchange data. To show how far we have come with technology and connectivity, we have smartwatches such as Fitbit, Garmin to name a few that have changed the way we look at time. We have one device that not only tells us the time but also tracks the number of steps, calories and heart rate. This watch is actually connected to our phone so with just one turn of the wrist, one can tell who is calling or what messages have been received without having to dig through pockets or handbags. IOT is making its presence felt in health care as well. Doctors can now remotely monitor and communicate with their patients and health care providers can benefit from this. Whether data comes from foetal monitors, electrocardiograms, temperature monitors or blood glucose levels, tracking this information is vital for some patients. Many of this requires to follow up interaction with healthcare professionals. With smarter devices that deliver more valuable data, it can reduce the need for direct patient-physician interaction. Take for instance in the sporting field, minute chips are being attached to balls and bats which will transmit information of how fast the ball is travelling and a batsman’s moves, the time, the angles, the pressure on the bat at different positions, data of the muscle stretch if he’s hit a six so on and so forth. Formula one cars are also being fitted with these sensors which relay information on the minute moves being made by the driver. Chips are also being put into wearable devices of sportsmen to detect suboptimal action of any body parts to show signs of stress or strain which will help in the early detection of injuries and take preventive measures. IOT has had an impact across all fields, be it industries, government, small or large business and even for personal consumption. IBM, Google, Intel, Microsoft, and Cisco are some of the top players in the IOT spectrum. With billions of devices connected security becomes a big issue. How can people make sure that their data is safe and secure? This is one of the major concerns in the IOT that becomes a hot topic. Another issue is with all these billions of devices sharing data companies will be faced with the problem of how to store, track, analyse and make vast sense of the information being generated. Companies are monitoring the network segment to identify anomalous traffic and to take action if necessary. Now that we have a fair understanding of IOT let’s see what impact it’s had on the education sector. The only constant in our lives is change and learning. From the get-go, we learn, be it to the walk, talk or run. We adapt to the changing times and constantly learn from them. Education or learning as we know it in the broader sense is the most important of all and the one that decides which way we handle those changes to impact us and the world. Today’s world is fast-paced and to keep up with this we need an infusion of speed with learning. From the classroom assignments, lectures, blackboards, and chalk we have come a long way to what is now known as e-learning (electronic learning) or m-learning (mobile learning). With the GenNext it is imperative to provide the right kind of education. The rise of technology and IOT allows schools to improve the safety of their campuses, keep track of resources and enhance access to information. It ensures data quality being the top priority but also facilitates the development of content allowing teachers to use this technology to create smart lesson plans and ensuring the reach of this content to any corner of the world.

IOT will help in simplifying patient-physician interaction because:


Paragraph: A fundamental principle of pharmacology is that all drugs have multiple actions. Actions that are desirable in the treatment of disease are considered therapeutic, while those that are undesirable or pose risks to the patient are called "effects." Adverse drug effects range from the trivial, e.g., nausea or dry mouth, to the serious, e.g., massive gastrointestinal bleeding or thromboembolism; and some drugs can be lethal. Therefore, an effective system for the detection of adverse drug effects is an important component of the health care system of any advanced nation. Much of the research conducted on new drugs aim at identifying the conditions of use that maximize beneficial effects and minimize the risk of adverse effects.

The intent of drug labeling is to reflect this body of knowledge accurately so that physicians can properly prescribe the drug; or, if it is to be sold without prescription, so that consumers can properly use the drug.

The current system of drug investigation in the United States has proved very useful and accurate in identifying the common side effects associated with new prescription drugs. By the time a new drug is approved by the Food and Drug Administration, its side effects are usually well described in the package insert for physicians. The investigational process, however, cannot be counted on to detect all adverse effects because of the relatively small number of patients involved in premarketing studies and the relatively short duration of the studies.

Animal toxicology studies are, of course, done prior to marketing in an attempt to identify any potential for toxicity, but negative results do not guarantee the safety of a drug in humans, as evidenced by such well-known examples as the birth deformities due to thalidomide.

This recognition prompted the establishment in many countries of programs to which physicians report adverse drug effects. The United States and other countries also send reports to an international program operated by the World Health Organization. These programs, however, are voluntary reporting programs and are intended to serve a limited goal: alerting a government or private agency to adverse drug effects detected by physicians in the course of practice. Other approaches must be used to confirm suspected drug reactions and to estimate incidence rates. These other approaches include conducting retrospective control studies; for example, the studies associating endometrial cancer with estrogen use, and systematic monitoring of hospitalized patients to determine the incidence of acute common side effects, as typified by the Boston Collaborative Drug Surveillance Program.

Thus, the overall drug surveillance system of the United States is composed of a set of information bases, special studies, and monitoring programs, each contributing in its own way to our knowledge about marketed drugs. The system is decentralized among a number of governmental units and is not administered as a coordinated function. Still, it would be inappropriate at this time to attempt to unite all of the disparate elements into a comprehensive surveillance program. Instead, the challenge is to improve each segment of the system and to take advantage of new computer strategies to improve coordination and communication.

The author is primarily concerned with discussing:


Paragraph: On the surface, the conquest of the Aztec empire by Herman Cortes is one of the most amazing military accomplishments in history. With a small fighting force numbering in the hundreds, Cortes led the Spanish explorers into victory against an Aztec population that many believe topped 21 million. In light of such a seemingly impossible victory, the obvious question is: how did a small group of foreign fighters manage to topple one of the world's strongest, wealthiest, and most successful military empires? 
Several factors led to Cortes' success. First, the Spanish exploited animosity toward the Aztecs among rival groups and convinced thousands of locals to fight. In one account of a battle, it is recorded that at least 200,000 natives fought with Cortes. Next, the Spanish possessed superior military equipment in the form of European cannons, guns, and crossbows, leading to effective and efficient disposal of Aztec defenses. For example, Spanish cannons quickly defeated large Aztec walls that had protected the empire against big and less technically advanced armies.

Despite the Spanish advantages, the Aztecs probably could have succeeded in defending their capital city of Tenochtitlan had they leveraged their incredible population base to increase their army's size and ensured that no rogue cities would ally with Cortes. In order to accomplish this later goal, Aztec leader Motecuhzoma needed to send envoys to neighboring cities telling their inhabitants about the horrors of Spanish conquest and the inevitability of Spanish betrayal.

In addition, the Aztecs should have exploited the fact that the battle was taking place on their territory. No reason existed for the Aztecs to consent to a conventional battle, which heavily favored the Spanish. Motecuhzoma's forces should have thought outside the box and allowed Cortes into the city, only to subsequently use hundreds of thousands of fighters to prevent escape and proceed in surprise "door-to-door" combat. With this type of battle, the Aztecs would have largely thwarted Spanish technological supremacy. However, in the end, the superior weaponry of the Spanish, the pent-up resentment of Aztec rivals, the failure of Aztec diplomacy, and the lack of an unconventional Aztec war plan led to one of the most surprising military outcomes in the past one thousand years.

The author implies which of the following about the nature of Aztec regional influence and power?


Read the given passage carefully and attempt the questions that follow.

MY LOVE OF NATURE, goes right back to my childhood, to the times when I stayed on, my grandparents' farm in Suffolk. My father was in the armed forces, so we were always moving and didn't have a home base for any length of time, but I loved going there. I think it was my grandmother who encouraged me more than anyone: she taught me the names of wild flowers and got me interested in looking at the countryside, so it seemed obvious to go on to do Zoology at University. 

I didn't get my first camera until after I'd graduated, when I was due to go diving in Norway and needed a method of recording the sea creatures I would find there. My father didn't know anything about photography, but he bought me an Exacta, which was really quite a good camera for the time, and I went off to take my first pictures of sea anemones and starfish. I became keen very quickly, and learned how to develop and print; obviously I didn't have much money in those days, so I did more black and white photography than colour, but it was all still using the camera very much as a tool to record what I found both by diving and on the shore. I had no ambition at all to be a photographer then, or even for some years afterwards.

Unlike many of the wildlife photographers of the time, I trained as a scientist and therefore my way of expressing myself is very different. I've tried from the beginning to produce pictures that are always biologically correct. There are people who will alter things deliberately: you don't pick up sea creatures from the middle of the shore and take them down to attractive pools at the bottom of the shore without knowing you're doing it. In so doing you're actually falsifying the sort of seaweeds they live on and so on, which may seem unimportant, but it is actually changing the natural surroundings to make them prettier. Unfortunately, many of the people who select pictures are looking for attractive images and, at the end of the day, whether it's truthful or not doesn't really matter to them. It's important to think about the animal first, and there are many occasions when I've not taken a picture because it would have been too disturbing. Nothing is so important that you have to get that shot; of course, there are cases when it would be very sad if you didn't, but it's not the end of the world. There can be a lot of ignorance in people's behaviour towards wild animals and it's a problem that more and more people are going to wild places: while some animals may get used to cars, they won't get used to people suddenly rushing up to them. The sheer pressure of people, coupled with the fact that there are increasingly fewer places where no-one else has photographed, means that over the years, life has become much more difficult for the professional wildlife photographer. 

Nevertheless, wildlife photographs play a very important part in educating people about what is out there and what needs conserving. Although photography can be an enjoyable pastime, as it is to many people, it is also something that plays a very important part in educating young and old alike. Of the qualities it takes to make a good wildlife photographer, patience is perhaps the most obvious -you just have to be prepared to sit it out. I'm actually more patient now because I write more than ever before, and as long as I've got a bit of paper and a pencil, I don't feel I'm wasting my time. And because I photograph such a wide range of things, even if the main target doesn't appear I can probably find something else to concentrate on instead.

She did more black and white photography than colour because 


Passage in this section is followed by a group of question which is to be answered on the basis of what is stated or implied in the passage. For some questions, more than one of the choices could conceivably answer the question. However, you are to choose the best answer, that is, the response that most accurately and completely answers the question and blacken the corresponding space.

One of the most prolific authors of all time, Isaac Asimov was influential both in science fiction and in the popularization of science during the twentieth century, but he is also justly famous for the scope of his interests. Although the common claim that Asimov is the only author to have written a book in every category of the Dewey decimal system is untrue, its spirit provides an accurate picture of the man: a dedicated humanist who lauded the far-reaching power of reason. His most famous work, the Foundation trilogy, can be read as an illustration of Asimov’s belief in reason and science, but even while he expressed that belief, science itself was calling it into question.

Foundation describes a time in which a vast Empire spanning the galaxy is on the verge of collapse. Its inevitable doom is a consequence not of its size, but of the shortsightedness of its leaders. In this environment, a scientist named Hari Seldon devises an all encompassing plan to help human civilization recover from the trauma of the Empire’s coming collapse. Using mathematics, Seldon is able to predict the future course of history for thousands of years, and he takes steps that are geared toward guiding that future in a beneficial direction. The trope of the benevolent and paternalistic scientist shaping existence from behind the scenes, present in much of Asimov’s fiction, is never more explicit than in the Foundation series, which describes with an epic sweep the course and progress of the Seldon Plan. 

As naive and, perhaps, self-serving as the conceit of Foundation may seem to contemporary readers, it retains to some degree its ability of comfort by offering an antidote to the complex and unpredictable nature of experience. Science in Asimov’s time was, in popular conceptions, engaged in just this pursuit: discerning immutable laws that operate beneath a surface appearance of contingency, inexplicability, and change. But even while Asimov wrote, science itself was changing. In Physics, the study of matter at the subatomic level showed that indeterminacy was not a transitory difficulty to be overcome, but an essential physical principle. In Biology, the sense of evolution as steady progress toward better-adapted forms was being disturbed by proof of a past large-scale evolution taking place in brief explosions, of frantic change. At the time of Asimov’s death, even Mathematics was gaining popular notice for its interest in chaos and inexplicability. Usually summarized in terms of the so-called ‘butterfly effect’, chaos theory showed that perfect prediction could take place only on the basis of perfect information, which was by nature impossible to obtain. Science had dispensed with the very assumptions that motivated Asimov’s idealization of it in the Seldon Plan. Indeed, it was possible to see chaos at work in Foundation itself: as sequels multiplied and began to be tied into narrative threads from Asimov’s other novels, the urge to weave one grand narrative spawned myriad internal inconsistencies that were never resolved.

Which one of the following most accurately expresses the main point of the passage? 


Read the given passage carefully and attempt the question that follows.

The work which Gandhiji had taken up was not only regarding the achievement of political freedom but also the establishment of a new social order based on truth and nonviolence, unity and peace, equality and universal brotherhood and maximum freedom for all. This unfinished part of his experiment was perhaps even more difficult to achieve than the achievement of political freedom. In the political struggle, the fight was against a foreign power and all one could do was either join it or wish it success and give it his/her moral support. In establishing a social order on this pattern, there was a strong possibility of a conflict arising between diverse groups and classes of our own people. Experience shows that man values his possessions even more than his life because in the former he sees the means for perpetuation and survival of his descendants even after his body is reduced to ashes. A new order cannot be established without radically changing the mind and attitude of men towards property and, at some stage or the other, the ‘haves’ have to yield place to the ‘have-nots’. We have seen, in our time, attempts to achieve a kind of egalitarian society and the picture of it after it was achieved. But this was done, by and large, through the use of physical force. 

In the ultimate analysis it is difficult, if not impossible, to say that the instinct to possess has been rooted out or that it will not reappear in an even worse form under a different guise. It may even be that like a gas kept confined within containers under great pressure, or water held back by a big dam, once the barrier breaks, the reaction will one day sweep back with a violence equal in extent and intensity to what was used to establish and maintain the outward egalitarian form. This enforced egalitarianism contains, in its bosom, the seed of its own destruction.

The root cause of class conflict is possessiveness or the acquisitive instinct. So long as the ideal that is to be achieved is one of securing the maximum material satisfaction, possessiveness is neither suppressed nor eliminated but grows on what it feeds. Nor does it cease to be possessiveness, whether it is confined to only a few or is shared by many.

If egalitarianism is to endure, it has to be based not on the possession of the maximum material goods by a few or by all but on voluntary, enlightened renunciation of those goods which cannot be shared by others or can be enjoyed only at the expense of others. This calls for substitution of material values by purely spiritual ones. The paradise of material satisfaction, which is sometimes equated with progress these days, neither spells peace nor progress. Mahatma Gandhi has shown us how the acquisitive instinct inherent in man can be transmuted by the adoption of the ideal of trusteeship by those who ‘have’ for the benefit of all those who ‘have not’ so that, instead of leading to exploitation and conflict, it would become a means and incentive for the amelioration and progress of society respectively.

According to the passage, people ultimately overturn a social order


Read the given passages and answer the question with the help of the information provided in the passage.

Under very early common law, all felonies were punishable by death. The perpetrators of the felony were hanged whether or not a homicide had been committed during the felony. Later, however, some felonies were declared to be non-capital offences. The common law courts, in need of a deterrent to the use of deadly force in the course of these non-capital felonies, developed the "felony-murder" rule. The first formal statement of the rule stated: '1\ny killing by one in the commission of a felony is guilty of murder." The killing was a murder whether intentional or unintentional, accidental or mistaken. The usual requirement of malice was eliminated and the only criminal intent necessary was the intent to commit the particular underlying felony. all participants in the felony were guilty of murder actual killer and non-killer confederates. Proponents of the rule argued that it was justified because the felony demon treated a lack of concern for human life by the commission of a violent and dangerous felony and that the crin1e was murder either because of a conclusive presumption of malice or simply by force of statutory definition. Opponents of the rule describe it as a highly artificial concept and "an enigma wrapped in a riddle." They are quick to point out that the rule has been abandoned in England where it originated, abolished in India, severely restricted in Canada and a number of other commonwealth countries are unknown in continental Europe and abandoned in Michigan. In reality, the real strength of the opponents' criticism stems from the bizarre and of times unfair results achieved when the felony-murder rule is applied mechanically. Defendants have been convicted under the rule where the killing was purely accidental, or the killing took place after the Felony during the later flight from the scene, or a third party killed another (police officer killed a citizen or vice versa, or a victim died of a heart attack 15-20 minutes after the robbery was over, or the person killed was an accomplice in the felony). Attacks on the rule have come from all directions with basically the same demand - re-evaluate and abandon the archaic legal fiction; restrict and F it vicarious criminal liability; prosecute killers for murder, not non-killers; increase punishment for the underlying felony as a real deterrent and initiate legislative modifications. With the unstable history of the felony - murder rule, including its abandonment by many jurisdictions in this country, the felony-murder rule is dying a slow but certain death. 

According to the passage, opponents of the felony-murder rule have raised all of the following objections to the statute except


Read the given passages and answer the question with the help of the information provided in the passage.

Thomas Edison was born in 1847 In Milan, Ohio. He was nicknamed 'Al' at an early age. At age 11, Edison moved to Michigan where he spent the remainder of his childhood. Thomas Edition struggled at school but learned to love reading and conducting experiments from his mother who taught him at home. At age 15, Edison became a 'tramp together', sending and rece1vrng messages via Morse code, an electronically-conveyed alphabet using different clicks for each letter. In 1870, Edison moved to New York City and improved the stock ticker. He soon formed his own company that manufactured the new stock tickers. He also began working on the telegraph and invented a version that could send our messages at once. Edison then moved with his family to New Jersey where he started his famous laboratory. In 1877, Edison, with help from 'muckers', individuals from around the world looking to make fortune in America, invented the phonograph. The phonograph was a machine that recorded and played back sounds. In 1878, Edison invented the light bulb as well as the power grid system, which could generate electricity and deliver it to homes through a network of wires. He subsequently started the Edison Electric Light Company in October of 1878. Edison continued to invent or improve products and make significant contributions to X-ray technology, storage batteries and motion pictures (movies). Edison was a prolific inventor, holding 1,093 US patents in his name, as well as many patents in the United Kingdom, France, and Germany. 

Which of the following is not included in Thomas Edison's invention?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×