Recently physicists at the Ludwig-Maximilians University Munich and the Max Planck Institute of Quantum Optics in Germany have registered a temperature a “few billionths of a Kelvin” below absolute-zero.
Now you’re probably thinking what???
If the Kelvin measurement of temperature is a measure of the energy of particles then how can we achieve a negative temperature and thus a negative energy? Furthermore if at Zero Kelvin particles stop moving how can you take energy from them?
Well some sci
Let’s say we have a person with a mass of 100 kg who can run at 5 m/s.
Now we can make use of Einstein famous equation of E = MC2 :einstein)
When the person is at rest, the total energy of the person is 100 * (3x108)2 or 9x1018 J
When the person is running, their Kinetic energy can be defined as ½mv2
Ke = (½)*(100)* 52
Ke = 1250 J
Therefore the person total energy is (9x1018 + 1250)J
With a little reworking of the equation, we can get Δ m = (Ef – Eo) / (C2)
Δ m = (1250 J / 9x1018 m2/s2)
So this morning I went out to warm up my car for practice, only to discover that my car door was frozen shut. Now I know what your thinking, why don’t you just pull harder, well I did but unfortunately the door handle was poorly designed. As shown in the picture below, one corner of the metal holding the handle on is detached.
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In order to open the door, the handle is pulled up and out at an angle. Under normal conditions, i.e., the door not being frozen shut
So I was watching Ironclad and decided that I could use the movie to blog about physics stuff.
The main character, Templar Knight Thomas Marshal was ridding around on his horse at Rochester castle, wailing his flair around, total bossing up those bad guys, when suddenly he is pulled off his horse. A huge crowd of bad guys form around him beating him with axes and hammers and stuff. Luckily our Templar Knight is tied to his stead who eventually/after an eternity, the horse decides it would be a
Well I am sure that you are all familiar with the LHC (Large Hadron Collider) discovery of the Higgs boson, but it looks as if the LHC as made another discovery, this one accidental!!!
After 2 million lead-proton collisions, the CMS team at the LHC discovered that several pairs of particles - that were created from the collision- flew away from each other with their respective directions being correlated. I am not a particles physicist so I have really no idea what this means or the significa
Well I'm really starting to run out idea for creative content so ill be writing about the eraser i just dropped out boredom. The eraser weighs about 1 gram and is dropped from the height of 1 m. The potential energy eraser is given by mgh and = .01 J. Neglecting air resistance, the eraser has a final velocity of about 4.47 m/s. This gives it a momentum of .00447 kg m/s downward since momentum = v * m. Neglecting the fact that the eraser bounces a little, what happens to the momentum in the downw
The Physics of how i time traveled into the Future and therefore these blogs posts aren't really late technically kinda probably.
Well um these blogs posts were due last night, which I didn't realize, also i thought they were just extra credit. So Ill discuss how I could have potentially traveled into the future which caused me to submit these late.
As we learned last year E = mC^2. As the speed of a particle increases in speed, the mass increases. But while the mass increases, time will a
Ever heard of the Superconducting Super Collider before? I certainly hadn't.
In 1983, plans for the Superconducting Super Collider were being developed by the U.S. Department of Energy. Its planned ring circumference was 87.1 kilometers with an energy of 20 TeV per beam of protons – numbers that surpasses those of the now operational Large Hadron Collider by a factor of three (27 kilometer with an energy of 7TeV per beam). The project initial goal was to detect the Higgs Boson. The project be
Two weeks ago on October 22, University of Texas at Arlington hosted a five day workshop devoted to the future of high energy linear electron-positron collider. At this workshop the future of two projects were discussed,the International Linear Collider(ILC) and the Compact Linear Collider(CLIC). The ILC is planned to have a collision energy of 500 GeV. The host country of the ILC has not yet been selected. The CLC is projected to have collision energy of 3TeV. The CLC (if built) will be located
Jason Padgett has Acquired Savant Syndrome. 10 years ago he was beaten and kicked in the head by some muggers after his jacket. While recovering in the hospital he became obsessed with mathematical equations. Apparently the damage to his head allows him to view everything he sees as a Math equation! Padgett turns these formulas into intricate diagrams called fractals. Prior to his accident Padgett was a college drop out and had never taken a college level math class before. An example of his wo
Keeping with the subject of physics of swimming, I'll be discusing why breathing right after the walls is a very bad idea. When you enter the water after your dive or when you push off the wall after your turn, you should be in the streamline postion as shown in the picture.
This position minimize the surface area exposed in the direction you are moving reducing the drag force. When you breathe while swimming, you pick your head up which causes the rest of your body to sink. This increases the
Keeping with the subject of physics of swimming, I'll be discusing why breathing right after the walls is a very bad idea. When you enter the water after your dive or when you push off the wall after your turn, you should be in the streamline postion as shown in the picture.
This position minimize the surface area exposed in the direction you are moving reducing the drag force. When you breathe while swimming, you pick your head up which causes the rest of your body to sink. This increases the
As I talked about in my last post, drag force is a huge factor in limiting performace in the pool. So how can we combat this problem?
Well for dedicated swimmers, shaving can make the difference. Since many races come down to fractions of seconds, any hair you can cut off can mean the difference bewteen first and second! Optimizing the distance you travel in the air when you dive of the block can make or break a race. As stated in my blog post, water is over 700 times denser and will offer far
In Swimming, reducing drag is a huge factor in decreasing your time and increasing performace.
Water is more than 700 times denser and 55 times more viscous than air. There
are three main types of drag that act on a swimmer: friction, wave, and pressure
drag. Frictional drag is the result of the interaction between the swimmer’s
body and the water molecules and serves to slow down the swimmer. However, this
drag also propels the swimmer through the water (Newton’s 3rd law).
As the s
I find an amazingly informative video on the Cern's LHC. It covers basics particles physics with some other things. The best part, Its a rap!!!
It was interesting to see the video theorizing the discovery of the Boson Higgs particle. The video - being made in 2008 - is abit behind with the times as the Higgs particle has recently been detected by experiments done with the LHC.
Well this is a little bit late, but I had some problems getting this posted. Also physics teaches us that time is relative so its all good.
I guess I should start with why I'm taking this class. I have always enjoyed puzzles and problem solving and I have no doubt that there won't be a shortage of those in this class! Last year it felt like we only touch the surface of many topic in Physics B, so I'm excited to dive deeper into the more complicated stuff.
I know for certain that I want
