Sun is the primary source of heat here in the Earth. As time moves on, human developed new sources of heat and light. Some of it are the torches, lamps, candles and others
Artificial heat sources include electric heaters, gas furnaces, and wood-burning stoves. Artificial light sources include incandescent light bulbs, fluorescent lights, and LED lights.
It is a natural source of heat energy
Two categories of heat sources are natural heat sources and artificial heat sources. Natural heat sources include the sun, geothermal energy, and volcanic activity. Artificial heat sources include electric heaters, gas heaters, and oil heaters.
No. Heat conduction has little to do with color.
No, artificial insemination will not be successful if the dog is not in heat. You should wait until she is before attempting this.
artificial heat and fans, cars and computers retard
Yes, it is possible but the natural sponge is expensive; artificial sponge is frequently used as heat insulator.
the sun gravitational compression of the still not fully compacted Earth (gravitational potential energy is converted to heat during compaction) radioactive decay comet and meteor strikes cosmic rays and neutrinos from extra-solar sources
electricity, solid fuel, fire(using wood), infrared light, light bulb or heat lamp, gas e.t.c
Yes, but on a low heat like 130, or depending on how good quality the fibre is you could go up to 180 MAXIMUM heat,
Yes. and No. It all depends on the heat given off the source of the artificial light.
Warm soup, or hot chocolate. Blankets. A hot bath. Any form of external heat applied to the body or ingested without the body itself creating the heat. if you don't want it to be artificial you could run around a field 10 times! =)