How to make fire from sunlight using a light bulb
You can get fire from the sun using a light bulb if you turn it into a lens. To do this, you need to pour water into it. This is not difficult to do by crushing the ceramic insulator at the top of the base with small blows applied by some metal object.
Then we remove everything that is inside from the bulb flask, breaking them into small pieces.
We fill the flask to the top with ordinary water and get a quite suitable lens, since it magnifies objects when you look at them through it. It also concentrates the sun's rays well to almost one point.
Let's start building a fire. To do this, we concentrate the sun's rays using our improvised lens on the cattail, gradually expanding the source of smoldering by moving the point of concentration of the sun's rays in a circle. At the same time, we constantly inflate the smoldering center with the required intensity.
As soon as the cattail begins to smoke, we cover it with dry grass and continue to fan the smoldering center until a stable and visible flame arises. By the way, instead of a light bulb flask, you can use any glass spherical vessel, for example, a chemical flask or glass.
