How does this work? Well, let's say that you have a power plant that can produce 1 million watts of power. One way to transmit that power would be to send 1 million amps at 1 volt. Another way to transmit it would be to send 1 amp at 1 million volts. Sending 1 amp requires on...
This can occur on a large scale, like a government program or law, or at the individual level. Individuals have had far greater access to birth control since the 1960s. Governments can control populations by enforcing penalties for having too many children, by making it more advantageous ...
However, temporal order can also be misleading (e.g., lightning does not cause thunder). The second temporal factor is temporal contiguity, or the close succession of two events. Contiguity increases causality ratings, while long delays decrease them [100]. Moreover, causality ratings decrease ...
How does the funny "H" pattern that I am moving this stick shift knob through have any relation to the gears inside the transmission? What is moving inside the transmission when I move the shifter? When I mess up and hear that horrible grinding sound, what is actually grinding? What ...
Sometimes in complex sunspot groups, abrupt, violent explosions from the sun occur. These are called solar flares. They are thought to be caused by sudden magnetic field changes in areas where the sun's magnetic field is concentrated. They're accompanied by the release of gas, electrons, visib...
But does counting really get you a good estimate for how far away the lightning is? Is this one of those old wives' tales, or is it actually based on science? In this case, we have physics to thank for this quick and easy – and pretty accurate – calculation. ...
Photo: Lightning is a huge release of electrical potential energy.Heat energyHeat is one of the most familiar kinds of energy in our world—but is it potential energy or kinetic energy? Actually, it can be both. Suppose you heat an iron bar in a fire so it glows red hot. If you ...
Do not place items with a magnetic strip (e.g., passports, parking tickets, or credit cards) near the charging area when charging a device. Damage may occur to the magnetic strip. Do not place metal objects (e.g., remote controls, coins, or candy wrappers) on or near the charging ar...
What's the difference between DC and AC electricity? What is an inverter? How does an inverter work? Types of inverters What are inverters like? What is an uninterruptible power supply? Find out moreWhat's the difference between DC and AC electricity?When...
Electricity can be dangerous, but taking the appropriate safety precautions can let you study how charges flow, how electric fields occur and how other phenomena in electricity function. Since the dawn of electricity in physics, scientists have used equipment to shield themselves from harm when perf...