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What did they use for light at night before fire was invented?
they used nothing
How do scientist use light?
Scientist can use light to move matter. For example, with directed beams of light, scientist can levitate, trap and grip small materials. The matter has to be surround by light entirely for this to work.
What is a night light called?
A night light is called a neon light
What is luminous materials?
Luminous materials are materials that give off light.
What is the correct color light to use when inspecting M8 or M9 paper at night?
White
Why should we use sodium lamp for light sensitive materials?
Sodium lamps only give monochromatic yellow light and so inhibit color vision at night, and cause less light pullution. You can get more details at blmall.com.
What is the use of a photo resistor?
A night light:)
What materials do you use to build a model?
light-sensitive material
What color light do you use when inspecting m9 paper at night?
A White light
What is the purpose of a night light?
if your scared of the dark you use it
What materials did Thomas Edison use to invent the light bulb?
nothing
What glue to use to repair night light?
Epoxy is best for that.
Is a black light safe to use as a night light to sleep with?
Yes. Provided it is a low intensity UV light. Don't use tanning equipment...
What materials are needed for light dependent reaction?
The light reactions require water and light energy in order to work.
Is there a special light to track wounded deer at night?
i use a blood light they sell them at walmart
What is a Light based industry here light means opposite of heavy?
The industries which use light raw materials and produce light goods are called light industries.
What are phosphorescent materials?
These materials absorb light energy in the day and they are able to give off this energy in the dark or at night. Some examples of these materials are glow in the dark stickers, glow in the dark watches and glow in the dark bouncy balls.
