Light+Can+Be+Reflected

=Unit 2 Optics=

Chapter 5 Optical systems make use of mirrors and lenses.
5.1 The Ray Model Of Light

The science8 textbook uses black ink on white paper. The reason black ink is opaque is because all the light falling on the ink is absorbed. The white paper then reflects all of the light that falls on it. Do you think that the white part of the paper is like a mirror, and if it is, why wouldnt we be able to see your reflection on it? The reason you can not see yourself in the white part of the paper is that in order for anything to be a mirror, it must have a smooth surface compared to the wavelengh of the light striking the surface. Through a mircoscope, paper is not smooth at all and paper can appear translucent because the light rays bounce off randomly at all angles, while smooth surfaces reflect all light uniformly.
 * Light Can Be Reflected** page 172


 * **Questions** || **Answers** ||
 * How does a light reflect? || In order for light to be able to reflect, a smooth surface has to be compared to the wavelength of the light striking the surface. ||
 * Why does some colours reflect and some absorbe? || The light rays bounce off randomly at all angles of the colour, causing it to absorbe, while others have smooth surfaces, resulting in reflection. ||
 * Explain why things don't reflect in dark rooms? || There is no light source. ||
 * What are the three colours that make up the rainbow? || The three colours are red, blue, and white/yellow. ||
 * What are the three secondary colours? || They are orange, green, and voilet. ||
 * What is another name for red, blue and green? || Another name is addictive colours. ||
 * Why are they called additive colours? || One's brain recognizes them faster than other colours. ||
 * How do you make white light? ||  ||
 * When two primary colours are together what would be the result? || The result would be one of the secondary colours. ||
 * Why does the colour yellow absorbe other colours? || Yellow has a lower frequency interval. ||
 * what are the three primary colours? || The three primary colours are red, blue, and yellow. ||
 * Why do certain colours look that way? || They have a certain wavelength interval. ||
 * What kind of object reflects light into different colours? || A prism reflects light into different colours. ||
 * Why does the rainbow curve? || The refractive index makes the rainbow seem like it's arched. ||
 * How do you make the colour yellow? ||  ||
 * When two primary colours are together what would be the result? || The result would be one of the secondary colours. ||
 * Why does the colour yellow absorbe other colours? || Yellow has a lower frequency interval. ||
 * what are the three primary colours? || The three primary colours are red, blue, and yellow. ||
 * Why do certain colours look that way? || They have a certain wavelength interval. ||
 * What kind of object reflects light into different colours? || A prism reflects light into different colours. ||
 * Why does the rainbow curve? || The refractive index makes the rainbow seem like it's arched. ||
 * How do you make the colour yellow? ||  ||
 * Why do certain colours look that way? || They have a certain wavelength interval. ||
 * What kind of object reflects light into different colours? || A prism reflects light into different colours. ||
 * Why does the rainbow curve? || The refractive index makes the rainbow seem like it's arched. ||
 * How do you make the colour yellow? ||  ||
 * Why does the rainbow curve? || The refractive index makes the rainbow seem like it's arched. ||
 * How do you make the colour yellow? ||  ||
 * How do you make the colour yellow? ||  ||