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carry the objects somewhere and then drop them by just turning off the power. For example, roofers use them to pick up nails that have fallen by accident into a homeowner's yard. And wrecking yards have cranes with built-in electromagnets strong enough to pick up and move entire cars...
Voltage, current and resistance are all interrelated — you can't change one without changing another. Current is equal to voltage divided by resistance (commonly written as I = v / r). This makes intuitive sense: If you increase the pressure working on the electric charge or decrease ...
and life support system. The station is equipped with a small kitchen for food preparation and the first-ever microwave oven in the spaceflight, so that astronauts can always have hot food whenever they need. 120 different types of food, selected based on astronauts' preference, are stored ...
Basic physics states that if there are no external forces at work, an object will always travel in the straightest possible line. Accordingly, without an external force, two objects traveling along parallel paths will always remain parallel. They will never meet. But the fact is, they do meet...
When the voltage surges above that level, the electrical power is strong enough to ionize the gas, making it a very effective conductor. It passes on current to the ground line until the voltage reaches normal levels, and then becomes a poor conductor again. Both methods have a parallel ...
The HONOR Phone is a strong option here. To be specific, HONOR Magic V3 features 66W HONOR SuperCharge for fast, efficient power boosts, backed by a durable 5150mAh battery to maintain long-lasting energy. It’s ideal for those who need consistent and speedy recharges without delay, ...
The rotor is a series of large electromagnets that spins inside a tightly-wound coil of copper wire, called the stator. The magnetic field between the coil and the magnets creates an electric current. In the Hoover Dam, a current of 16,500 amps moves from the generator to the transformer,...
There are three essential elements involved in producing fire: heat, oxygen and fuel. To put a fire out, you need to effectively remove one of these elements. The best way to remove heat is to dump water on the fire. This cools the fuel to below the ignition point, interrupting the com...
invisible to the naked eye, someone who intends to work as an electrical engineer should be curious about mysterious forces that significantly affect the universe but aren't obvious to a layperson. A future electrical engineer should have a powerful imagination and strong abstract...