1 way could be at night time. You need to pay an electricity bill to have light at night.
well, when people didnt have light bulbs and electricity they were out in the sun and getting vitamin D and they would be healthy but since Nikola Tesla invented the light bulb (he was brilliant) they didnt get much sun and they would be inside alot.
Waiting 4 answer if any one knows
refrigarator-electrical energy-light energy-heat energy
Good things about radiant energy is that it gives off heat, and also can be used as a light source. It isn't however useful in producing large amounts of energy.
flashlight
Five examples of energy transformation:television-electrical energy->light energy->sound energy->heat energycar-chemical energy->mechanical energy->sound energy->heat energylight bulb-electrical energy->light energy->heat energyrubber duck-kinetic energy->elastic energy->sound energymatch-chemical energy->light energy->heat energy
5 Sources of heat and light energy? 1. Sun 2. petroleum 3. natural gas 4. coal 5. solar energy
One of the disadvantages of an automatic street light is that sometimes it does not turn off when it should. This results in wasted energy and added costs.
IT TAKES LOTS OF ENERGY -Rob Walters
There are no energy sources without disadvantages.
What are the advantages and disadvantages of wave energy
refrigarator-electrical energy-light energy-heat energy
None. But it does convert 5 watts of electrical power (energy per unit time) into 5 watts of [light + thermal] power.
Good things about radiant energy is that it gives off heat, and also can be used as a light source. It isn't however useful in producing large amounts of energy.
TV- Electrical energy to light and sound energy Radio and stereo - Electrical energy to sound energy Fan- electrical energy to mechanical energy Toaster - Electrical energy to heat energy Light bulb- Electrical energy to Light energy Battery or cell - Chemical energy to electrical energy
flashlight
The disadvantages of heat are that if there is no solar energy, then there is no heat.
Five examples of energy transformation:television-electrical energy->light energy->sound energy->heat energycar-chemical energy->mechanical energy->sound energy->heat energylight bulb-electrical energy->light energy->heat energyrubber duck-kinetic energy->elastic energy->sound energymatch-chemical energy->light energy->heat energy
Five examples of energy transformation:television-electrical energy->light energy->sound energy->heat energycar-chemical energy->mechanical energy->sound energy->heat energylight bulb-electrical energy->light energy->heat energyrubber duck-kinetic energy->elastic energy->sound energymatch-chemical energy->light energy->heat energy