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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.
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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.
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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?)
Write what is implied in the following sentence.
People started telling Davy that of all his discoveries, the best was Faraday himself.
(What does it suggest about Davy’s work?)
Find out more about the following scientist with the help of the internet.
James Maxwell
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.
What were the odds against Faraday in his childhood?
What was the subject of Davy’s lecture?
How did Faraday respond to that treatment?
What happens when an electric current is applied to a wire?
An induction motor is a commonly used electrical machine. What examples of its use are given here?
Give one example to show that Faraday was a good pupil.
Guess the meaning of reverse engineer it.
‘In order to succeed, your desire for success should be greater than your fear of failure’.
- Michael Faraday
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.
One day he came across a book on ______.
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.
He handed him a piece of Bavarian glass, which ______ microscopes ______.
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 never believed ______.
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 ______.
