Light What is light Light is a form
- Slides: 17
Light
What is light? • Light is a form of energy • It can be converted to other forms of energy • An example of this is the Crookes Radiometer
• A luminous object gives off its own light • Non-luminous objects do not give off their own light
Luminous
Non-luminous
Light Travels In Straight Lines • Light always travels in straight lines • Light from a lightbulb will travel out in all directions, but each ray of light travels in a straight line
Shadows • Shadows are formed when an object blocks light • Shadows are not always sharp • This is because the light is not always completely blocked
Solar eclipse
Reflection • Reflection is when light reflects back from a surface
Periscopes
Refraction • Refraction is the bending of light as it passes from one medium to another • A medium is something light travels through • Light bends because the new medium has a different density
Lenses • Lenses are used to bend rays of light • A convex lens brings rays of light together
• Concave lenses makes rays of light spread out
Dispersion • Dispersion is the breaking up of white light into seven colours
• Crookes radiometer • Light travels in straight lines • How shadows are formed • Reflection from a mirror • Periscope • Refraction in a glass block • Refraction in water • Refraction from an object in water • Convex lens • Concave lens • Dispersion of light
- Light light light chapter 23
- Into the light chapter 22
- Light light light chapter 22
- Negative form present continuous
- Othello put out the light
- Bacteria double membrane
- Or the bending of light and the bouncing off of light
- Material blocks light
- Light is form of
- Luminous objects
- Light is a form of
- Is a form of energy that travels in straight lines
- Light comparative and superlative
- Parabola vertex form
- Rectangular to polar form
- Transformation of exponential functions
- Multiplying rectangular form
- General form of a circle to standard form