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प्रश्न
List the different gadgets and instruments mentioned in the passage. Find more information about them (at least 3), using the internet.
उत्तर
- Gadgets and Instruments:
Fan, air conditioners, sewing machines, power tools, cars, trains, aeroplane engines, induction motors, telescopes, Bavarian glass, microscopes, electrical generators, and light bulbs. Now you add to the list of gadgets and instruments. You can add your own too. - Microscope:
It is an instrument used to see objects that are too small to be seen by the naked eye. Anton Van Leeuwenhoek (1632 - 1723), a Dutch scientist, who in the late 17th century became the first man to make and use a real microscope. All microscopes come with a lens that can magnify 40 times the normal size. - Electrical generator:
It was invented by Michael Faraday in 1831. It is a device that converts mechanical energy into electrical energy. Sources of mechanical energy include steam, turbines, gas turbines, water turbines, etc. It works on the principle of electromagnetic induction. - Fan:
A fan is a machine used to create flow within a fluid, typically a gas such as air. The fan consists of a rotating arrangement of blades which act on the fluid. The fan was invented by Schuyler Skaats Wheeler in 1882.
APPEARS IN
संबंधित प्रश्न
Write what is implied in the following sentence.
Even then Davy did not have much hope for Faraday.
(What do the words 'even then' suggest?)
Break the passage into convenient smaller sections.
Give sub-headings or titles to each section.
Find out more about the following scientist with the help of the internet.
James Maxwell
- What would you like to learn about in your Science period?
- Have you ever tried to do an experiment on your own? If yes, tell me about it. If not, tell me why you’ve never tried.
- What would you like to learn about in your English classes?
Think of as many examples of the following as you can within five minutes and write them in the appropriate column.
| Type of machine | Examples |
| Simple machines that are operated by hand |
|
| Machines that run on electricity | |
| Electronic devices |
Choose any one machine or device and prepare a short note about it. It should include
- The structure of the device
- How it works (functions)
- A labelled diagram
- One or two lines about when and how it evolved.
Before you read further, guess what the passage is about.
Why do you think Faraday’s friend gave him a free ticket to Davy’s programme?
What was the subject of Davy’s lecture?
What actions and thoughts of Faraday show that he was inspired by Davy?
Guess the meaning of mentor.
What happens when an electric current is applied to a wire?
Give one example to show that Davy was not a good mentor.
Faraday kept a souvenir of his failure as a source of inspiration.
Write the idea behind an electrical generator.
‘In order to succeed, your desire for success should be greater than your fear of failure’.
- Michael Faraday
Why were Faraday’s drawings not accepted?
Does it mean they were wrong?
Try out the experiment of the iron filings and the magnet.
epitomises: is a perfect example of.
Find the following matter in the passage and copy the missing word.
When he was twelve, ______ school ______.
Find the following matter in the passage and copy the missing word.
Faraday decided that ______ scientist - ______.
Find the following matter in the passage and copy the missing word.
Davy never believed ______ science ______.
Find the following matter in the passage and copy the missing word.
He handed him a piece of Bavarian glass, which ______ microscopes ______.
Find the following matter in the passage and copy the missing word.
He went on to prove that ______ filings;
Find the following matter in the passage and copy the missing word.
It was Maxwell who ______ equations ______.
Now complete the following sentence using your own word.
When he was twelve, ______.
Now complete the following sentence using your own word.
One day he came across a book on ______.
Now complete the following sentence using your own word.
He decided that ______.
Now complete the following sentence using your own word.
People started telling ______ that ______.
Now complete the following sentence using your own words.
He handed him ______ which ______.
Now complete the following sentence using your own word.
He went on to prove that ______.
Now complete the following sentence using your own word.
It was ______ who ______.
