The most important technology that came out of WWII was the nuclear bomb. But the second most important technology and probably the most used today is Radar. Every airport in the US uses Radar to track flights. But the physics behind this technology is very simple. It's the Doppler effect. A Radar system has two parts a transmitter and a receiver. The transmitter sends out a burst of radio waves. These waves go until it hits an object, say a plane and bounce back with a different frequency beca
Every Police/Law enforcement show has an interrogation where the criminal sweats it out while the detectives stand behind a one way mirror. How do this mirrors work? It's all about the light. Think of you're favorite interrogation room with a one way mirror in it. It's almost always bright in there while the room on the other side is kept dark. you might of thought like I did that it was to blind the suspects but in reality it's how the mirror works. A one way mirror is basically just half a mi
In today's world we've almost all been on a plane at least once in our lives but it was just over a hundred years that the Wright brothers flew for the first time. The physics behind flight is not very complex at all but most people don't think about what's keeping them from dropping 30,000 feet in a 490 ton airplane. In the follow picture we see the all the forces acting on the plane and we all know that for the plane not to fall from the sky the net force in the up direction has to equal 0 so
Were as the idea for planes and the physics behind them make sense, the helicopter is completely different. In order to create the same lift as a plane does by getting air pass over the wings very fast, a helicopter has to lift by spinning it's rotor blades very fast. the same principle of fluid dynamics is responsible for the lift force on a helicopter. The blades on a helicopter are shaped almost the exact same as plane wing so that when they are spun they create a upward force on the helicopt
Skipping the intro, bullets gain all of their kinetic energy from expanding gas. When the trigger is pulled, the firing pin in the gun comes forward and ignites the gun powder in the shell. The chemical energy stored in the powder is then convert into heat which cause the temperature of the the air between the bullet and the shell to rise rapidly. Remembering the equation from last year PV/T=PV/T this shows that when the temperature increases ether the pressure or volume has to increase also. I
Time to finish this. And This is just going to be all about how i feel the class is going so far. Right now I enjoy this class because it's not extremely hard. Yes the tests are hard but we're not learning anything new were just using derivatives and integrals on equations we used last year. I think the reason we think the tests are so hard is because we're not always taught everything that's going to be on the test and Mr. Fullerton leaves some stuff for us to figure out; which wouldn't be to
http://crazyarcade.wikispaces.com/file/view/dagobah_happy_wheels_DEMO.swf/182259727/dagobah_happy_wheels_DEMO.swf
Before reading this you should play this game and warning it is pretty gruesome.
This game has pretty good physics mostly although some parts of the game defy real life. For example the projectile motion is great because when you go off a jump or are sent flying by a land mine your body as well as the part of body that were probably blown off all have a parabolic path. Even t
We all remember E=mc2which we have heard about ever since we started science and learned about last year. But we didn't learn that that's only part of the equation. The whole equation is E2=(mc2)2+(pc)2 where P is momentum. If an object is stationary, it has no momentum and therefore we're back to E=mc2. Also if an object has no mass(aka light) then E=pc. So the smaller something is mass-wise, then the more like light it acts. Like an electron for example has such a tiny mass it almost acts like
Released in 1984 Tetris has been confounding physicists as to how the blocks move in the way they do. Now almost 30 years later, the secrets of tetris have final revealed. The blocks are moved using a combination of magnetism and electricity to move the block sideways and down. Unseen to the player each block has a slight positive charge and at the bottom of the screen there is eletric plate that is negatively charged. This causes the block to accelerate downward but it is only on for a few mill
The sport of tennis is the oldest and most love sport in the world. People have been playing tennis ever since the Acient Greeks took a stone and started hitting it back and forth over a fallen tree with branchs. Granted back then the sport was much more dangerous; many an acient greek lost an eye or a limb due to getting hit with the sharp rock that they played with, but even today the physics that govern the game today with the tennis balls with fuzz that sticks to your socks remain the same.
This again come from MindCipher.com.
A person is holding on to a helium balloon in an elevator. The elevator cable snaps, and at the exact same moment, the person lets go of the helium balloon. In the perspective of the person in the elevator, what happens to the balloon the moment the cable snaps?
Red Remover is a puzzle game which relies heavy on the laws of physics and breaks almost all of them at the same time. Red Remover is a game where you have to remove all the red blocks by click on certain blocks and making them disappear. This is the and most fundamental law of physics that this game breaks because matter and energy can never be destroyed and even if by clicking on the block caused them to turn into energy, there would be so much energy that it would blow all the near by blocks
March has always been the worst month of the school year and this was no exception. A combination of harder classes, more homework, sports and the increasing effectiveness of seniorities turned the last week of the 3rd quarter into a cram session of trying to get everything done. Seeing how I am doing these blogs, it's clear how far behind I was and still am. This has been a rude awakening as to how much stress procrastination causes and I hope that I will be able to put off seniorities until af
A bottle rocket works because of Newton's third law of motion. As more air is pumped into the "tank" the pressure increases so that when the restraint holding the rocket in place is removed, the pressurized air forces the water out of the bottle. Newton's third law states that for every action there is an equal and opposite reaction. This means that water exerts an upward force on the bottle itself. This is what sends it into the air. A nose cone works by cutting through the air instead of the b
Real rockets work just the same as the model bottle rockets that we made for arts fest. Rocket engines instead of using water expel gases and the pressure that is used to expel these gases come from the burning of fuel.When the fuel is burn, the energy released increases the temperature of the gases that created when this fuel is spent. These super heated gases want to expand which causes the pressure to increase. As the pressure increases, the gases are pushed out the back end of the engine whi
Currently the only way for us to get around in space is to use rocket fuel and chemical reactions to push the rocket around. This is very expensive and current rockets are 95% fuel by weight. However NASA is developing an alternative that uses the the sun to push the rocket around. These solar sails are made with large ultra-thin mirrors that use the light of the sun to push the sail around. These sails have to be reflective because when the light hits the said it has to be reflected. This they
The greatly feared captain of the pirates "Schalkimnack" was not only famous for his cruelty but also for baffling his prisoners with difficult brain twisters. This is one of his favourite riddles:
Schalkimnack took a gold coin an throw it overboard into the sea. He asked:
"Did the sea level ... a) rise, sink or c) stay like before?"
If one of the prisoners could solve the riddle, he was set free, but in case of giving the wrong answer, he was thrown to the sharks. Legend relates that un
