Calculate the perfect lighting for any room morewith ease. Our tool helps you determine the ideal lumens based on room size, purpose, and other factors.
| From: | To: |
| Unit | Symbol | Description |
|---|---|---|
| Lumen | lm | Measures the total amount of visible light emitted by a source. |
| Foot-Candle | fc | Measures the amount of light received on a surface per square foot. |
| Lux | lx | Measures the amount of light received on a surface per square meter. |
| Candela | cd | Measures the luminous intensity in a specific direction. |
| Luminous Efficacy | lm/W | Measures the efficiency of a light source in converting electrical power to visible light. |
1. What is light?
Light is a form of energy that is visible to the human eye. It travels in waves and is made up of particles called photons.
2. What is the speed of light?
The speed of light in a vacuum is approximately 299,792 kilometers per second (186,282 miles per second).
3. What is the electromagnetic spectrum?
The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation, including visible light, radio waves, X-rays, and more.
4. What is reflection?
Reflection is the bouncing back of light rays when they hit a smooth, shiny surface.
5. What is refraction?
Refraction is the bending of light as it passes from one medium to another, such as from air to water.
6. What is dispersion?
Dispersion is the splitting of white light into its constituent colors when it passes through a prism.
7. What are some natural sources of light?
Natural sources of light include the Sun, lightning, and bioluminescent organisms like glowworms.