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In olden days civilization in South America used a lens to start fire.what kind of lens did they use and how did the fire start?

They Used a Convex Lens


Can a concave lens start a fire with the aid of the sun?

No, a concave lens cannot start a fire with the aid of the sun. Concave lenses cause light rays to diverge, which would spread the sunlight out rather than concentrate it to create enough heat to start a fire. For starting a fire with a lens, a convex lens or a magnifying glass is usually used to focus sunlight to a point.


Why would you use convex lens to start a fire?

A convex lens can concentrate sunlight to a small point, creating intense heat that can ignite materials. By focusing sunlight through a convex lens onto a combustible material, you can generate enough heat to start a fire. This process is called solar or lens fire starting.


What kind of lens would let you focus the sun rays light to start a fire?

A magnifying lens, like a Fresnel lens or a convex lens, can concentrate sun rays to create a focal point that is intense enough to start a fire. This works by focusing sunlight onto a small area, increasing the temperature and igniting flammable material like paper or dry leaves.


How can a convex lens be useful for making a fire?

A convex lens converges light. If the sun is out, you can concentrate enough light on a point to start a fire. There is an old joke about the Focus Ranch, where the "sons raise meat" -- or where the "suns rays meet".


Is it possible to start a fire with ice?

Yes, it is possible to fashion ice into a lens that is capable of sparking a fire from sunlight in dry tinder.


How do you start a fire without buying stuff?

It can be done with a bow and a stick or a mirror or magnifying lens


What kind of lens would let you focus the sun's rays to start a fire?

A convex lens, such as a magnifying glass, can focus the sun's rays onto a small point, creating enough heat to start a fire. The lens concentrates sunlight in a way that increases the temperature at the focal point, igniting flammable material.


In olden days civilizations in south America use a lens to start a fire what kind of lens did they used and how did the fire start?

Well what u are refrerring to is the process of refraction. They would be using a convex lens. this lens has the ability to refract all the light rays which come from a far distance (known as infinity in physics) towards a common point (called focus). So obviously if all the rays reaching the lens from the sun are refracted by a convex lens they would heat up the point at which all of them converge. this started a fire. this can also be done with a magnifying glass as that also has a convex lens. TW K


Which lens is the type of lens that is used in hand lens?

The type of lense is a convex lense


What are the release dates for Independent Lens - 1999 Beyond the Fire?

Independent Lens - 1999 Beyond the Fire was released on: USA: 2004


What is the other type of lens besides magnifing?

Another type of lens is the opposite called a reducing lens.