Most people are under the impression that pennies are made of copper. This is only partially true. Before 1982, pennies were made of 95% copper and 5% zinc. Because the price of copper was rising, the U.S. Mint had to change the penny’s composition to keep the cost of the coin under one cent.
A fuel cell is a cell that produces an electric current directly from a chemical reaction. hydrogen fuel cell is capable of producing electricity without any pollution because the only byproduct is pure water. Hydrogen fuel cells are the most common, used in spacecraft and other areas where there is a specific need for … Continue reading Make Your Own Hydrogen Fuel Cell
Everything contains particles which have electrical charges, they can be positive, negative or neutral. Atoms are the basic building blocks of everything in the universe, and are made up of three components, electrons, protons and neutrons. Electrons have a negative electric charge and are usually associated with electricity. Protons have a positive electric charge … Continue reading Electric Charge Demonstration
Today an increasing number of people are conducting their own space exploration projects. The main reason behind this increase in space exploration is that it no longer costs billions of dollars to achieve. Another reason is that exploring space no longer takes several years in development time and expertise. These two major factors are making … Continue reading Start an Affordable High School Space Program
A microcontroller is a small computer on a single integrated circuit containing a processor core, memory and programmable input/output peripherals. Microcontrollers are designed for embedded applications, in comparison to the microprocessors used in personal computers or other general purpose applications. Microcontrollers are used in a wide variety of automatically controlled products and devices. Microcontrollers … Continue reading How to Make an Electric Microcontroller Patch
This beautiful Moonlit LED flower is simple and inexpensive to make right at home. We will show you how with our basic tutorial on how to sew this soft circuit flower. The first thing you will need to do is to cut, out of your fabric, the petals and a wrapper … Continue reading How to Make a Moonlit LED Flower
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