How long exactly depends on the strength of the electric current you use and the concentration of the electrolyte. Increasing either of these increases the speed at which ions and electrons move through the circuit and the speed of the plating process. As long as ions and electrons keep moving...
Half adders can't really do any more than this, but if we put a few more logic gates together, we can make what's called a full adder circuit that does harder sums with bigger numbers. How does an adder work? That's beyond the scope of this introductory article, but you can find ...
Explain the division of the circulatory system into the pulmonary and systemic circuits. Briefly discuss the role of valves in the blood circulatory system. How does the lymphatic system work closely with the cardiovascular system? Describe the heart and its functions. What are the components of th...
Describe the role of the pulmonary circuit. Describe the function of the SRY gene. Describe the structure and function of the pancreas and the role of pancreatic juice in digestion. Explain the heritability of traits. Describe the role of hyaline and fibrocartilage in synchondroses. How does the...
If anything, because of the sheer inefficiency of the machine, you'll make the room even hotter. But using a refrigerator to cool a home isn't such a crazy idea as it might seem: with a few slight modifications, it's almost exactly how an air conditioner works. Let's take a closer...
How does a battery really work? Where does the power in a battery actually come from? Let's take a closer look! Here's my battery hooked up to a flashlight bulb to make a simple circuit. I've unwrapped a paperclip to make a piece of connecting wire and I'm holding that between th...
How does an electronic computer manipulate all the mechanical nitty gritty in a hard drive? There is an interface (a connecting piece of equipment) between them called a controller. This is a small circuit that operates the actuators, selects specific tracks for reading and writing, and convert...
How does an electrolyzer work? Here's how a very simple electrolyzer makes hydrogen gas from water: A battery connects the positive terminal to the negative terminal through an electrolyte. In a simple laboratory experiment, the electrolyte could be pure water. In a real electrolyzer, performance...
Now for AM, the wavelengths are about 100 times greater, so how come you don't need an antenna that's 300m (0.2 miles) long to pick them up? Well you do need a powerful antenna, you just don't know it's there! The AM antenna on the inside of a transistor radio works in a ...
Ions (as well as electrons) help to carry the electricity through batteries when you connect them into a circuit. How many atoms are there in something? If atoms are so tiny, there must be zillions and zillions of them in all the things around us... but how many are there, exactly?