At one time or another, we've all been told not to use metal products, especially aluminum foil, when cooking with a microwave oven. Stories of incredible explosions and fires usually surround these ominous warnings. Why is that? Let's take a look at how microwave ovens work to find out...
As a UK trader, you may trade commodities through futures exchanges, like the London Metal Exchange (LME). The LME offers futures contracts on metals like copper, aluminum, precious metals, and other common metals. You may also speculate on commodity prices through contracts-for-difference, minin...
Find the latest about Fotech news, plus helpful articles, tips and tricks, and guides at Fotech News - How to Distinguish Inferior Refrigerants?
Aluminum base PCBs – Mainly used in lighting equipment. Since super-bright LEDs generate a lot of heat, it is necessary to dissipate it as quickly as possible in order to increase their service life and prevent overheating. There are also technologies that allow you to solder directly onto an...
In microwave cooking, the radio waves penetrate the food and excite water and fat molecules pretty much evenly throughout the food. No heat has to migrate toward the interior by conduction. There's heat everywhere all at once because the molecules are all excited together. There are limits, ...
Calculate the magnitude of rate of heat flow (in kJ/s=kiloWatts) by conduction through 1.7cm thick Aluminum plate with an area of 3.1m^2, if the temperature difference between the two sides is 17.2 de An electric dryer consumes 6.0 \times 10^6 joules of energy when operating at 220 vol...
The currents must find a return path and ground is dedicated for that. So, separate ground does not mean having two different grounds, but they must be common. In the case of a multilayer board and separate ground between digital and analog, ...
Then very little conduction could take place. So maybe have a second cup outside the first one with an air gap (or, better still, a vacuum) in between. That's convection and conduction just about licked, but what about radiation? If you were to wrap aluminum foil round the outer cup,...
Most semiconductors are made of a poor conductor that has had impurities (atoms of another material) added to it. The process of adding impurities is called doping. In the case of LEDs, the conductor material is typically aluminum-gallium-arsenide (AlGaAs). In pure aluminum-gallium-arsenide, ...
The simplest example of a solid electrolyte might be the potato in a potato battery. Potatoes seem pretty dry, but they contain enough moisture to permit the conduction of electrons and ions through the protein-and-starch matrix of the potato. Stick a penny and a galvanized screw into a pota...