Misconceptions of Physics

Misconceptions of Physics One of the misconceptions in physics is about Newtons laws. It says that friction can't act in the direction of motion. This is wrong because friction can act in the same direction as motion simply because a car on a road is traveling in one direction. The friction on the tires causes it to slow down over a distance along with some air resistance. This proves that friction can act in the same direction as motion A misconception in physics is that the moon is not in free fall.

This statement is simply not true, and facts easily can prove this wrong. The moon is in free fall because earth's gravity pulls it down. As the moon goes around the earth, it is free falling because it goes around earths gravity field to maintain the same resistance all the way around. This is true with satellites, and like all the planets in the solar system.

They all rotate around some gravitational mass that causes them to free fall. Another misconception is the moon is not falling.This is not true, and it is in fact a lie. The moon is falling because the moon is free-falling around earth.

If it weren't free falling, what would it be? The moon is falling due to earth's gravitational force. This is a direct variable for why the moon falls. Planetary orbits are circles. This is a law that is not true, and there are reasons why. Planetary orbits are actually elliptical. It seems like it shouldn't be this way because it free falls at a constant rate, but it makes an elliptical pattern.

Kepler's law has been proven wrong, and shows that not everything that scientists say isn't always correct. This is a tested and proven fact that they are actually elliptical. Wave nature of light is another misconception. It says that light just is and has no origin. Well this can obviously be proven wrong by just looking up at the sky. The sun is producing light, and if it weren't true then why is it that it gets dark at night? If light has no origin, then it should be plentiful and last forever.

Since the sun goes down there is no more light being produced, which then concludes that light has a source and an origin. Skin is a good thermometer, which is a funny misconception. Skin can tell hot from cold, but it is a very inaccurate thermometer because there are many factors outside that can make you think it is hotter than it actually is. When the weather man tells you the temperature outsides is 84, but it feels like 94, that is when the variables come in to make it seem hotter than it is.

More than likely, humans will over-exaggerate the temperature they feel and guess an even crazier number like 105 and it's only 84. The millikan experiment “scientists always stumble on discoveries” is a definite wrong misconception. Scientists mostly all the time are trying to experiment with data to come up with their theories that they predict. It is seldom that they do stumble on them, but the purpose to all scientific experiments is to have a problem, and try to come up for an explanation for it.I don't recall any big discoveries being made that were accident, so to say that they always stumble on discoveries is a huge misconception.

Simple dc circuits misconception states “Batteries create energy out of nothing. ” Batteries actually have chemicals in them that produce the electricity to give the object they're in power. It may seem that batteries create energy out of nothing, because it doesn't come from the powerlines or a power plant. To say that they create energy out of nothing is a very ignorant analysis of batteries.Another misconception with equipotentials and fields is that high voltage by itself is dangerous. This is not true because high voltage has no threat as long as a person doesn't become the conductor.

But as long as the high voltage is contained it poses no hazards to anyone. In introduction to waves, it says big waves travel faster than small waves in the same medium. This is not true, because it small waves travel faster. That is why gamma rays can penetrate more items than any other wave, because it is more concentrated and travels faster than all the other waves.