especially in sunny countries like South Africa.Solar panelsusephotovoltaic (PV) cells to convert sunlight directly into electricity. These panels can be placed on rooftops or set up in large fields, capturing sunlight all day long. When the sun hits the cells, it gets theelectrons moving...
How do electricity and magnetism interact? How much force can a rocket engine generate? How can objects become electrically charged? How do electrons create a magnetic field? How is a cyclotron engine different than an ion engine? How is energy released in a nuclear reaction?
Of course, using a generator to make electricity is just the beginning. After you get your electrons moving along, you'll need an electrical circuit to do anything with it. Find out why next.Electrical Circuits Batteries When you load a battery into an electronic device, you're not simpl...
Just like in the solar system, the nucleus is large compared to the electrons. The atom is mostly empty space. And the electrons are very far away from the nucleus. While this model is not completely accurate, we can use it to help us understand static electricity. (Note: A more accurat...
From the small AA batteries used in your TV remote to large, industrial power stations that pull electricity directly from a grid, if it stores and transfers electrons, then it can power an electromagnet. Let's start with a look at how household batteries function. Most batteries have two ...
What do a wrecking yard, a rock concert and your front door have in common? They each use electromagnets, devices that create a magnetic field through the application of electricity. Wrecking yards employ extremely powerful electromagnets to move heavy pieces of scrap metal or even entire cars fr...
A transmission electron microscope fires a beam of electrons through a specimen to produce a magnified image of an object. A high-voltage electricity supply powers the cathode. The cathode is a heated filament, a bit like the electron gun in an old-fashioned cathode-ray tube (CRT) TV. It ...
How do solar panels work? When solar panels are exposed to sunlight, the material releases electrons and produces an electrical charge. However, only a certain portion of sunlight that hits a panel can be converted into electricity; this amount is calculated in percentages and is called solar pa...
A conductor is a material through which electricity -- a flow of electrons -- easily moves. The entire copper core is coated with an even layer of phosphor lubricant. Phosphor -- like the kind in light sticks and other glow-in-the-dark products -- is the key to electroluminescent wire....
Of course, using a generator to make electricity is just the beginning. After you get your electrons moving along, you'll need an electrical circuit to do anything with it. Find out why next.Electrical Circuits Batteries When you load a battery into an electronic device, you're not simpl...