3 years ago

What is the principal of operation of astronomical telescopes?

1 answer:

5 0

All telescopes are designed to do one thing: collect light. By using a telescope, you are condensing the light from a larger area through a system of mirrors and or lenses to a small area that can be seen through the pupil of your eye

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Calculate the number of moles of water molecules in 12 dm' of water<br>vapour at STP.<br><br>

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$22.4 \: {dm}^{3} \: are \: occupied \: by \: 1 \: mole \\ 12 \: {dm}^{3} \: will \: be \: occupied \: by \: ( \frac{12}{22.4} ) \: moles \\ = 0.536 \: moles$