Understanding Light, Wavelengths, and Reflection
Explore the nature of light as electromagnetic radiation and its role in photography. Learn about the properties of light, including wavelengths, reflection, and how they impact our perception. Understand how light interacts with different surfaces and the basics of reflection.
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Quiz29 Questions
Flashcards15 Cards
Study Notes1 Note
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Understanding Light, Wavelengths, and Reflection
Quiz • 29 Questions
Understanding Light, Wavelengths, and Reflection - Flashcards
Flashcards • 15 Cards
Study Notes
4 min • Summary
Materials
List of Questions29 questions
- Question 1
- Electric and magnetic fields.
- Question 2
- 4,000 to 7,000 angstroms
- Question 3
- The angle of incidence equals the angle of reflection.
- Question 4
- Diffuse reflection
- Question 5
- 65 degrees
- Question 6
- No, the three rays will diverge after reflection.
- Question 7
- Refraction is the redirection of a wave as it passes from one medium to another.
- Question 8
- Glasses, cameras, binoculars, microscopes, and the human eye.
- Question 9
- The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant.
- Question 10
- Refractive index
- Question 11
- It bends towards the normal.
- Question 12
- The refracted ray will bend towards the normal.
- Question 13
- $2 \times 10^8$ m/s
- Question 14
- Mirages, rainbows, objects appearing closer underwater.
- Question 15
- Reflection and refraction.
- Question 16
- Diffuse reflection occurs on rough surfaces, causing light to scatter in various directions, which allows us to see objects from multiple angles.
- Question 17
- The light ray will bend away from the normal.
- Question 18
- The speed of light decreases.
- Question 19
- Specular reflection. The light reflects at the same angle as it hits the surface. With a rough surface it would be diffuse reflection, where the light scatters.
- Question 20
- The ray will be displaced laterally but will be parallel to its original direction.
- Question 21
- Scattering, because shorter wavelengths (blue and green) are scattered away by the atmosphere, leaving longer wavelengths (red and orange).
- Question 22
- Light rays bend as they pass from water to air, making the object appear higher in the water.
- Question 23
- Refraction
- Question 24
- Less than 45 degrees.
- Question 25
- Reflection is when light goes back to the previous medium but changes direction.
- Question 26
- Specular reflection occurs when light rays reflect off a smooth surface, maintaining the same angle of incidence and reflection, resulting in a clear and direct reflection.
- Question 27
- Diffuse reflection occurs when light rays reflect off a rough or uneven surface, scattering the light in various directions rather than maintaining a consistent angle of reflection.
- Question 28
- Natural light, front or flat light, backlight, soft light, hard light, rim light, loop light, broad light, short light, butterfly lighting, split lighting and Rembrandt lighting.
- Question 29
- Spectacles worn by people with defective vision use the principle of refraction.
List of Flashcards15 flashcards
- Card 1HintThink of what you see withMemory TipLight enables sight; remember it's electromagnetic.
- Card 2HintThink of a mirrorMemory TipReflection: light bouncing back.
- Card 3HintWhich ray comes first?Memory TipIncoming light before reflection: incident ray.
- Card 4HintLight that is bounced backMemory TipLight after bouncing: reflected ray.
- Card 5HintWhat angle is first?Memory TipIncoming ray angle: incidence.
- Card 6HintWhat angle is second?Memory TipOutgoing angle is called reflection.
- Card 7HintFirst point of contactMemory TipThe start point of contact: point of incidence.
- Card 8HintLight is predictable.Memory TipEqual angles in reflection.
- Card 9HintA very polished objectMemory TipPerfect mirror image in specular reflection.
- Card 10HintThink of a non-smooth object.Memory TipDiffused light is reflected from an uneven object.
- Card 11HintThink of how light changes in waterMemory TipRefraction bends light.
- Card 12HintHow much does light slows down?Memory TipDescribes how fast light travels!.
- Card 13HintThink of a fast car slows to parkMemory TipDenser mediums pull light in.
- Card 14HintHeat makes the mind play tricksMemory TipMirages are bent illusions.
- Card 15HintPhotography cannot take place without it.Memory TipNo light, no photo!