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The moon has no light of its own why is it the that it can be seen shining brightly in the sky?
The same way a mirror looks bright if you shine a torch on it.It reflects the Suns' light.
Why was a torch invented?
torches were made for light.
How is a torch bulb non luminous?
because it has light
What are some of sources of light?
Sun light Moon light Candle light Fire light Torch light Star light Morning light Electric light
What is the light sources made by people called?
Man-made light sources... lamp, torch, LCD etc.
Does a torch use a concave mirror or convex mirror?
Concave
What is the purpose of the concave mirror behind the bulb in the flashlight?
You want a torch to emit light in a beam, in only one direction. But the bulb in the torch emits light in all directions, the mirror reflects the light going in the wrong direction(towards the inside of the torch) back out the front of the torch making it brighter. It is concave so as to focus the light more.
Is a torch mirror concave or convex?
it is a convex mirror as it produces diverging waves
Why CONCAVE MIRRORS USED IN TORCH LIGHT?
The concave mirror reflects the bulb's light, and if the bulb is at the mirror's focus, sends it out as a parallel beam.
How concave mirrors are employed to use light energy more effectively?
A concave mirror converges light rays falling on it. Parallel beams are converged to a point known as 'focus' of the concave mirror. In this way, most of the light rays falling on it are not deviated or lost. This helps in effective and optimum use of light where needed as in vehicle headlight, torch etc.
Why is reflector fitted around the torch bulb?
The bulb can be fitted with aluminum reflector to focus the light
Why are concave reflectors used in torches and headlamps of vehicles?
The bulb is so placed in a torch that it just lies at the focus of the concave reflector. By doing this, we obtain a parallel beam of light, that is, light rays tend to travel infinitely, thus could be used to see objects for a longer distance.
What is source of light?
The light that comes from a mirror is exactly the same light that landed ON the mirror, in exactly the same way that the tennis ball that comes from the wall is the same ball that was thrown AT the wall.
Why were people trying to quench the Olympic torch?
The Olympic torch is part of a tradition going back thousands of years to the original Greek Olympics; it symbolizes the blessing of Apollo, the sun god (the Olympic flame is first ignited with sunlight, using a concave mirror to focus the light). We no longer worship Apollo, but we still light the torch.
What are two ways that an object gives of light?
A torch emits light from the bulb. A mirror gives off light by reflection.
What is an electric torch?
A torch consist of a plastic casing,a bulb ,electric cells. a slide switch and a reflector. Firstly complete the circuit and then put two electric cells or batteries into the plastic case.when you close the switch the circuit will be complete and the bulb will glow. The reflector will pass the light too the big distance and and lighten the distance upto where the light the goes.
Where and how is the olympic and paralympic torch lit?
The Olympic Torch is ignited at the site of the ancient Olympics in Olympia, Greece. The torch is kindled by the concentrated light of the Sun, focused by a parabolic mirror. The torch is then carried by a relay of runners to the location of where the games are being held.
