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Reader questions and feedback on physical science. Also refer to physics, chemistry, astronomy, electricity, magnetism, electromagnet, light, sound, waves, forces, work, energy, friction, heat, thermodynamics, Ron Kurtus, School for Champions. Copyright © Restrictions

Answers to Readers' Questions on Physical Science:

Visbile Light

The following 2 comments and questions have been sent in. They are listed according to date.

List of first 10 items

• Can light bend?
• Can a laser be used for heating?

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Can light bend?

Question

August 5, 2008

is it possible to bend light?

dekota - Australia

16313

Answer

Yes, bending light is called refraction.

See: www.school-for-champions.com/science/light_refraction.htm

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Can a laser be used for heating?

Question

November 20, 2006

visible light carries heat or infra red radiations ffrom sun which are coming along with light? if visible light is not producing heating then how laser can?

raghuvir - India

12435

Answer

The sun radiates many wavelengths of the electromagnetic spectrum, including visible light and infrared. On the other hand, a laser only radiates in very specific wavelengths. Red is the most common color or wavelength. But there are lasers that radiate only in the infrared, and they are good for heating objects.

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