How Time Dilation Makes Sense previous home next PDF Michael Fowler, UVa Physics, 12/1/07 “Moving Clocks Run Slow” plus “Moving Clocks Lose Synchronization” plus “Length Contraction” leads to consistency! The object of this exercise is to show explicitly how it is possible for two observers in inertial frames moving relative to each other at a relativistic speed to each see the other’s clocks as running slow and as being unsynchronized, and yet if they both look at the same clock at the same time from the same place (which may be far from the clock), they will agree on what time it shows! Suppose that in Jack’s frame we have two synchronized clocks C1 and C2 set 18 x 108 meters apart (that’s about a million miles, or 6 light-seconds). Suppose C' is synchronized with C1 as they pass, so both read zero. As measured by Jack the spaceship will take just 10 seconds to reach C2, since the distance is 6 light seconds, and the ship is traveling at 0.6c. What does clock C' (the clock on the ship) read as it passes C2?
- StumbleUpon Top 6 Sites that Inspire and Educate If you’re a professional who likes to be intellectually stimulated and you enjoy keeping up with the latest news and breaking trends, the internet provides you with an endless choice of carefully curated sites to visit. Today, we bring you six of them that we believe are leaps and bounds above the rest. These sites will not only educate you on topics ranging from business and technology to art and design, they’ll motivate you to find your own, original ideas and see them through. They’re culturally relevant, they’re idea driven and most of all, they’re deeply inspirational. TED is short for three incredibly important subjects in our modern world; technology, entertainment and design. Started in 1984, TED brings together the most brilliant minds to teach us about issues that matter. Tip: Download TED’s free iPad app to browse through 800 videos by date, popularity or keyword. 2. Brain Pickings started from very humble beginnings. 4. 5.
How to Win Friends and Influence People Six Ways To Make People Like You Become genuinely interested in other people.Smile. Remember that a man's name is to him the sweetest and most important sound in the English language. Be a good listener. Encourage others to talk about themselves. Twelve Ways Of Winning People To Your Way Of Thinking The only way to get the best of an argument is to avoid it. Nine Ways To Change People Without Giving Offense Or Arousing Resentment Begin with praise and honest appreciation. Fourteen Rules For Making Your Home Life Easier Don't nag. Notes Criticism is futile because it puts a man on the defensive, and usually makes him strive to justify himself. When dealing with people, let us remember we are not dealing with creatures of logic. The deepest urge in human nature is the desire to be important. Almost Everybody Wants... Health and the preservation of life. “Every man is my superior in some way. To make a woman fall in love with you, all you have to do is to talk to her about herself! Raised Rent
10.2 A 4-bit Multiplier Chapter start Previous page Next page This section presents a more complex VHDL example to motivate the study of the syntax and semantics of VHDL in the rest of this chapter. 10.2.1 An 8-bit Adder Table 10.1 shows a VHDL model for the full adder that we described in Section 2.6, "Datapath Logic Cells." Table 10.2 shows a VHDL model for an 8-bit ripple-carry adder that uses eight instances of the full adder. 10.2.2 A Register Accumulator Table 10.3 shows a VHDL model for a positive-edge-triggered D flip-flop with an active-high asynchronous clear. Table 10.5 shows a model for a datapath multiplexer that consists of eight 2:1 multiplexers with a common select input (this select signal would normally be a control signal in a datapath). 10.2.3 Zero Detector Table 10.6 shows a model for a variable-width zero detector that accepts a bus of any width and will produce a single-bit output of '1' if all input bits are zero. 10.2.4 A Shift Register 10.2.5 A State Machine Stop when all bits of A are zero.
Career Options for Physics Majors Do Anything. Do It All. Do Physics. Dr. Nate Bachman has the best of both worlds. Bachman, a project manager and physicist for Schlumberger, helped create a magnetic resonance imaging tool called the MR Scanner that is used in oil field boreholes for earth evaluation. Bachman knows about the academic side of physics. “I was going into physics and I knew full well one of the endpoints was going to grad school, getting creditions, and landing a professorship,” Bachman says. Sound interesting? Careers in Physics Despite what you might have heard, you can do more with a Physics degree than teach at a college and conduct research. Medicine MRIs, PET scans, and proton beam accelerators are all based on physics. Fusion Read about a UT Physics student who is now studying nuclear fusion energy at MIT. Nuclear engineering Read about how a Naval nuclear engineer ended up studying physics. Teaching (high school physics) Think about the most earthshaking discovery you might make as a physicist. Business
Calculus Integrals Math Sheet Definition of an IntegralReturn to Top The integral is a mathematical analysis applied to a function that results in the area bounded by the graph of the function, x axis, and limits of the integral. Integrals can be referred to as anti-derivatives, because the derivative of the integral of a function is equal to the function. PropertiesReturn to Top Common IntegralsReturn to Top Integration by SubstitutionReturn to Top Integration by PartsReturn to Top Integration by Trigonometric SubstitutionReturn to Top Trigonometric identities can be use with integration substitution to simplify integrals. First Trigonometric SubstitutionReturn to Top To take advantage of the property Substitute After substitution Second Trigonometric SubstitutionReturn to Top After substitute Third Trigonometric SubstitutionReturn to Top
Download Free Political Documentaries And Watch Many Interesting, Controversial Free Documentary Films On That You Wont Find On The TV! French expressions you won't learn at school -- Expressions françaises en Anglais The Kinect-A-Sketch: A Homebrew Robotic Sketcher This video from Waterloo Labs shows a bunch of young, excited interns building what amounts to a computer-controlled Etch-A-Sketch. The project uses an Xbox Kinect sensor to find the nearest point in space and then transmits that motion to an Arduino board which in turn controls stepper motors to turn the Etch-A-Sketch knobs. Sure you could just turn the knobs yourself, but where would the fun be in that? You can pick up an Arduino board and software for about $50 these days so these sorts of wacky homebrew projects are closer to everyday reality than you’d think. Considering the highest tech I ever got in school was building a balloon powered car, to have these resources at hand would be boon to science teachers everywhere. While you won’t be drawing the Mona Lisa with this thing, it’s a fun experiment and the video – after the gratuitous nerd intro – is pretty funny.
Relativistic Baseball What would happen if you tried to hit a baseball pitched at 90% the speed of light? - Ellen McManis Let’s set aside the question of how we got the baseball moving that fast. The answer turns out to be “a lot of things”, and they all happen very quickly, and it doesn’t end well for the batter (or the pitcher). The ball is going so fast that everything else is practically stationary. The ideas of aerodynamics don’t apply here. These gamma rays and debris expand outward in a bubble centered on the pitcher’s mound. The constant fusion at the front of the ball pushes back on it, slowing it down, as if the ball were a rocket flying tail-first while firing its engines. After about 70 nanoseconds the ball arrives at home plate. When it reaches the batter, the center of the cloud is still moving at an appreciable fraction of the speed of light. Suppose you’re watching from a hilltop outside the city.