8th grade homework

[xprolife]

24)What colors are reflected from a red and green sweater?What colors are absorbed?

 

25)An archerfish spits waterdrop's to knock down insects that are close to the water.Suppose the fish aimed in the direction in which it sees the insect.Explain why the waterdrop would miss the target.

 

26)Ellen owns a pair of polarizing sunglasses with round lenses.One lens popped out,and she put it back into place.What can she do to check whether or not the polarized lenses are lined up properly?

 

27)The bulb in a flashlight is placed in front of a curved,shiny surface.How does this produce a narrow beam of light.<br class="Apple-interchange-newline">

[Fuzzwood]

 

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[ewmon]

24) What do you mean by a red and green sweater?

[the asinine cretin]

Here are some clues.

 

24) Reflection and Absorption

25 & 27) The Reflection and Refraction of Light

26) FWIW: Brewster's Angle

 

You must have an appropriate textbook or lecture notes, no?

Edited April 1, 2012 by the asinine cretin

[rktpro]

27)The bulb in a flashlight is placed in front of a curved,shiny surface.How does this produce a narrow beam of light.<br class="Apple-interchange-newline">

 

Where you got that from?

[Fuzzwood]

Where you got that from?

 

It's called a reflector. Its operation is the reverse of how dish antennae work.

[rktpro]

It's called a reflector. Its operation is the reverse of how dish antennae work.

 

I was asking about the text in bold in the quote box-<br class="Apple-interchange-newline">