incandescence, a general term meaning light produced by heat . In an incandescent type of bulb, an electric current is passed through a thin metal filament, heating a filament until it glows and produces light.

Parts of a light bulb: the glass globe, the metal filament, wires and glass stem, gases and metal base.

A light-bulb produces light from electricity. In addition to lighting a dark space, they can be used to show an electronic device is on, to direct traffic, for heat, and for many other purposes. Billions are in use, some even in outer space. Early people used candles and oil lamps for light.

constructed from silicone with an added luminous pigment, the regular looking lights are formed using a solid, typical bulb-shaped mould. requiring absolutely no electricity to glow, the adaptable fixtures can be used in a wide range of environments.

LEDs draw very little power so they can run for a long time on a small battery without any issues. There is no need for a bulky wall transformer and a wall plug to light your project.

“You can charge your phone using your body electricity by making a capacitor using items commonly found in your pocket. You need two silver coins, a paper clip, a piece of paper, your charging cable and of course your phone. The paper clip is to connect inside of your usb connector to the outer plate of the capacitor.

What’s the best way to charge your smartphone?

1. Avoid full cycle (zero-100 percent) and overnight charging.
2. Ending a charge at 80 percent is better for the battery than topping all the way up to 100 percent.
3. Use fast charging technologies sparingly and never overnight.
4. Heat is the battery killer.

Android phone manufacturers, including Samsung, say the same. “Do not leave your phone connected to the charger for long periods of time or overnight.” Huawei says, “Keeping your battery level as close to the middle (30% to 70%) as possible can effectively prolong the battery life.”