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To be more efficient! The flash bulb emits light in all directions, but you only use the light going in the forward direction, because the object you want to light up is in that direction.
If there was no curved shiny surface behind the flash bulb all light that is emitted in a backward direction is absorbed by the camera, heating it up (quite a lot actually!), and going to waste. This is about half the light!
The curved shiny surface acts as a mirror which reflects the backwards light back to the forward direction, thus more light is used in a useful manner.
It is shiny because it needs to reflect light (mirrors are also shiny), and curved because it channels the light into a forward direction instead of simply reflecting it.
You can actually see the same mechanism in car lights!
What else can I help you with?
Example of a reflector with a rough surface?
A light colored or highly polished metallic surface will reflect a lot of heat (which is primarily infrared radiation). Some people in sunny places put a folding windshield screen up inside their car. The best ones have what looks like shiny aluminum foil on them to reflect the heat.
Is it burned-out or burnt-out light bulb?
bulb light burned out every 4 months.type of bulb is H7
Is the wet bulb thermometer reading always higher than a dry bulb reading?
No, the wet bulb is always lower. Evaporation from the wet bulb reduces its temperature.
What is Aspirator bulb?
An aspirator bulb is an apparatus used to suck mucus out of a nose. It has a bulb on the end and is composed of a long stem connected to it. The bulb is squeezed and when let go it suctions things out of the nasal cavity.
What is the difference between an H7 bulb and a H1 bulb?
H1 bulbs have 2 spade connector and the H7 bulb has 1 spade connector
Why do headlights on cars have a shiny surface behind the bulb?
Reflects the Light more!...directs the beam to the front.
Why do some lights and torches have a shiny back?
Lights and torches with a shiny back have a reflector component that helps redirect and focus the light emitted by the bulb forward, improving the overall brightness and efficiency of the light source. This design enhances the reach and intensity of the light beam produced by the device.
Do torches have magnets in them?
No, torches do not have magnets in them. Torches usually consist of a battery, a bulb, and occasionally a switch and reflector to provide light. Magnetism is not a typical component found in torches.
What was used as light before the light bulb?
Kerosene lamps, torches, candles, etc.
Made of glass and found in torches?
The answer is most likely a "light bulb". It is made of glass and can be found in torches or flashlights to produce light when electricity flows through it.
How many streetlights are there on a street?
Torches come in many sizes, either with one or more LEDs or the older filament bulb, with a plastic or metal case. Any store should have a variety of torches on display - all at various prices.
What are facts about Thomas Edison's light bulb?
1. it made a shiny light
What are rechargeable torches made of?
A rechargeable torch is simply a rechargeable flashlight that can be plugged in and charged. This product contains a light bulb and internal battery.
Can you substitute a regular light bulb for a krypton light bulb?
Generally, yes. It will all depend on the voltage and the current capabilities of the supply. Mostly in torches (flashlights), you can. Using a krypton bulb wil be brighter but draw more current, reducing the life of the batteries.
What is the principle behind the light of bulb showing different colors?
It has to do with certain chemicals in the bulb that are made into color when the bulb is turned on.
How do you change the parking light bulb?
behind the headlight
What different materials are used to make torches?
light bulb batteries batttery holder light bulb holder switch to turn it on and off and you would need something to bring it all together like how a real torch has a plastic holder
