In order to view the sun, the most suitable instrument to...
In order to view the sun, the most suitable instrument to use is?
helioscope
telescope
stroboscope
sun meter
Correct answer is A
A helioscope is an instrument used for observing the sun and sunspots.
The helioscope was first used by Benedetto Castelli and refined by Galileo Galilei.
Which of the following is not an evidence of the particle nature of matter? ...
An electric iron is rated 1000W, 230V. What is the resistance of its elements? ...
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