3 years ago

Why is the H-R diagram useful in plotting the life cycles of stars?

1 answer:

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The sun provides a handy benchmark for describing other stars. The mass of this solar system's sun gives us a unit for measuring other stars' masses.

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Energy is measured in units called

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Does air defy gravity?

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If you were to inject air into space what would have happen?

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An oil film with refractive index 1.48 and thickness 290 nm is floating on water and illuminated with white light at normal inci

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Answer:

572.3 nm

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$n_{oil}$ = refractive index of the oil film = 1.48

$t_{oil}$ = thickness of the oil film = 290 nm

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Using the equation

$2 n_{oil} t_{oil} = (m + 0.5) \lambda$

For m = 0

$2 (1.48) (290) = (0 + 0.5) \lambda$

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For m = 1

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$\lambda$ = 572.3 nm

For m = 2

$2 (1.48) (290) = (2 + 0.5) \lambda$

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