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The light that is now coming to us in the cosmic microwave background radiation was released in an event called "Recombination," which occurred about 377,000 years after The Big Bang, which occurred about 13.7 billion years ago. Thus, for SOME light beams we detect today, our Universe is about 13.7 billion years old.
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∙ 11y ago
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How is energy transferred through a flashlight?
A flashlight converts the chemical energy stored in batteries into light and heat.most of the energy is converted to heat.Only a small percentage of the original energy in the battery is converted into light energy. -answered by:11 yr old gurl
Which energy conversion takes place when a solar cell is used to light a street lamp?
light to electricity to light (plus that old devil heat).
What energy is the type of energy light?
Light has heat and light energy. Example is bulb.
Is light energy a source of energy?
Yes light is energy
What is true about energy and how light transforms into heat such as when a light warms up?
Light can be absorbed, and converted to heat.However, if a light-bulb heats up, it's to a great extent due to other effects - for example in the old-fashioned incandescent light-bulb, the electrical energy gets converted FIRST to heat energy; a small part of that heat energy then gets converted into visible light. In other types of light bulbs, the light bulbs get hot mainly because NOT all of the energy gets converted into visible light; part of it gets converted into heat.
How does light contain its energy?
Light contains its energy in the old fashion way E=mc^2. Lights mass m=h/cw !
How are modern light bulbs different from the old light bulb?
I think they save energy and are folersent but what do i know
How is energy transferred through a flashlight?
A flashlight converts the chemical energy stored in batteries into light and heat.most of the energy is converted to heat.Only a small percentage of the original energy in the battery is converted into light energy. -answered by:11 yr old gurl
Are energy saving light bulbs brighter than regular light bulbs?
Not necessarily. They can be brighter, or less bright. Both the energy saving light bulbs and the old-fasioned incandescent light bulbs come in different powers.
Why is the energy of a flashlight heat and light energy?
because old - style light bulbs work by passing an electric current through a thin piece of metal (tungsten is commonly used in these) to heat it up enough to make it glow. In these old - fashioned light bulbs, most of the input energy is given out as heat (about 95%) and the rest light. However, in new, so called,"energy efficient" light bulbs, an electric current is passed through different gases (including mercury gas) to make the particles collide with each - other and give out light. Depending what metal vapour you use determines the colour of the light given off. These are more energy efficient because about 60% of the energy given out is heat, and 40% light, so it isn't ideal, but is better than the old light bulbs. However, these new light bulbs might not be entirely benefitial as they are less cost - effective than the old ones. Written by a 12 - year old!
Which energy conversion takes place when a solar cell is used to light a street lamp?
light to electricity to light (plus that old devil heat).
Is light energy an kinetic energy?
Light energy is radiant energy.
What energy is the type of energy light has?
Light has heat and light energy. Example is bulb.
What type of energy is the energy of light?
Light has heat and light energy. Example is bulb.
What energy is the type of energy light?
Light has heat and light energy. Example is bulb.
What is light a energy of?
Light energy is the energy that stimulates vision
Is light energy a source of energy?
Yes light is energy
