A light bulb is a closed and completely sealed glass vessel that has a pear-shaped shape. In truth, now there are many forms and principles of operation of bulbs, but in this article we will talk about the usual "Ilyich bulb" with a filament. She received this name thanks to the mastermind of electrification in the Soviet Union.
The first filling lamp was invented in 1809 by the Englishman Delar. But then it had not a tungsten, but a platinum spiral of a completely different shape. And the first tungsten filaments appeared 100 years later in 1905 in Hungary. The principle of operation of the bulb is the flow of electric current through the body of the filament, which heats the inert gas inside the glass vessel. Gas, under the influence of high temperature, emits in a wide range, including visible light. There are many types of light bulbs: local lamps, mirror incandescent lamps, spotlights, lamps for optical instruments and many others.
From old bulbs you can make various crafts: original plant vases, Christmas-tree decorations and decor elements. This is possible due to the properties of this material for crafts. Firstly, you can draw water into the container. Secondly, transparent glass makes it possible to see any filler that you want to place inside (for example, sand or pebbles). You just need to follow the instructions and tips that you will find on the website in various articles about crafts from light bulbs.
Surely beer lovers know that the famous Oktoberfest was first electrified in 1886. These works were carried out by a company that belonged to Einstein's father. And Albert Einstein himself screwed bulbs in the seller’s beer tent by the name of Schottenhammer.
At the end of the article I want to give a very interesting riddle about light bulbs, only real ones the inhabitants of our site will be able to cope with it and write their own answer options (there are several) in the comments:
In a closed room in the attic are three bulbs. Three switches to three bulbs - downstairs, on the first floor. You can click the switches as much as you want, and you can leave them in any position. But after that only one trip up is allowed.
Question: How to determine which switch each lamp works from?