1. Why must a film that is used to observe interference colors be thin? 2. A hum
ID: 3164194 • Letter: 1
Question
1. Why must a film that is used to observe interference colors be thin?2. A human eye perceives color using a structure which is called a cone that is located on the retina. Three types of molecules compose these cones and each type of molecule absorbs either red, green, or blue light by resonance absorption. Use this fact to explain why the color of an object that appers blue in air appears blue underwater.
3. Can a virtual image be photographed? If so, give an example. If not, explan why.
4. why is it far les dangerous to stand in front of an intense beam of red light than an front a very low intensity beam of gamma rays
1. Why must a film that is used to observe interference colors be thin?
2. A human eye perceives color using a structure which is called a cone that is located on the retina. Three types of molecules compose these cones and each type of molecule absorbs either red, green, or blue light by resonance absorption. Use this fact to explain why the color of an object that appers blue in air appears blue underwater.
3. Can a virtual image be photographed? If so, give an example. If not, explan why.
4. why is it far les dangerous to stand in front of an intense beam of red light than an front a very low intensity beam of gamma rays
2. A human eye perceives color using a structure which is called a cone that is located on the retina. Three types of molecules compose these cones and each type of molecule absorbs either red, green, or blue light by resonance absorption. Use this fact to explain why the color of an object that appers blue in air appears blue underwater.
3. Can a virtual image be photographed? If so, give an example. If not, explan why.
4. why is it far les dangerous to stand in front of an intense beam of red light than an front a very low intensity beam of gamma rays
Explanation / Answer
When light falls on thin films, they get reflected back. The light rays reflected from upper layer(air film) and from lower layer(film and mirrored surface that reflects) interferences/superimpose.
The thickness of film should some odd multiple of quater of wavelength if not destructive interference occurs .
With polychromatic light, different colours get reflected and interference colours are observed.
In a bubble, for an example , when white light enters, two surfaces are air-soapfilm and soapfilm-air, to produce interference colours.
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