Until recently, the most common way to measure oxygen saturation has been to use a pulse oximeter positioned on the finger. How Does a Pulse Oximeter Work? A pulse oximeter works on the principal that absorption of light in oxygenated hemoglobin (HbO2) and deoxygenated hemoglobin (RHb) differ...
If the numbers are too high, it means that the heart is having to work too hard because of restrictions in the pipes. Certain hormones, like adrenaline (which is released when you are under stress) cause certain blood vessels to constrict, and this raises your blood pressure -- if you ar...
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“If we figure out how to harness this effectively and efficiently, this is it. This is the end. This is the solution,” an expert tells us.
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How Does a Laser Pointer Work? Laser pointers work through the principles of light amplification and stimulated emission. Inside a laser diode, which is designed to produce a concentrated beam, a process called light amplification occurs. This process involves exciting atoms or molecules, causing the...
(so it's brilliant for the environment too). But exactly how well your batteries perform depends on how you use them and how carefully you charge them. That's why a decentbattery chargeris as important as the batteries you put into it. What is a battery charger and how does it work?
The output circuit's load (the work it does) is moving the speaker cone. The input circuit is the electrical audio signal recorded on tape or running in from a microphone. Its load is modifying the output circuit. It applies a varying resistance to the output circuit to re-create the ...
uses less energy than conventional pumps. A submersible pump also uses less energy, which benefits the business. Another benefit is that the gas inside the pipe does not fall back into the tank after pumping. Acheck valveabove the fluid helps hold the gas in place, creating an airtight seal...