Sunlight, obviously. Fire: candles, lamps, torches, etc.
They would put rocks in a fire and take them out when they got REALLY hot.
In the olden days, technology was primarily based on simple mechanical inventions and natural materials. Tools such as levers, pulleys, and wheels facilitated labor and transportation. The invention of the printing press in the 15th century revolutionized communication, while basic agricultural techniques improved food production. Other early technologies included the use of fire for cooking and heating, as well as rudimentary forms of communication like smoke signals and carrier pigeons.
In olden days, people primarily used natural materials like wood, dried grass, and animal dung to create fire. They often relied on methods such as friction, striking flint stones, or using a bow drill to ignite these materials. Additionally, fire was sometimes started by using sparks from striking two stones together or by utilizing the sun's rays through a magnifying glass. These techniques were essential for warmth, cooking, and protection.
They Used a Convex Lens
before toasters people used to toast bread or bagels over a fire . they didnt have electricity in the olden days. you should know this gosh.
By striking FLINT against STEEL over TINDER. Join the Boy Scouts of America and learn how to do it. It could save your life.
well it really is a heated debate. no dumb pun intended. was it man with 2 sticks or not? in my opinion it was lightening strike and the cavemen found the fire and realized what it was and how to use it.
because they are suppose to be mad eof wood so that the light up like in the olden days using woo sticks to make fire
they boiled the water over fire and then trapped the steam and transfered the new clean water to another pot to make in drinkable
By writing letters
using fire