Physics 252 Home This website contains the complete set of lecture notes for Physics 252, the fourth semester of our four-semester Introductory Physics course for physics majors. Links to lectures are in the left column. What is “Modern Physics”? “Modern” physics means physics based on the two major breakthroughs of the early the twentieth century: relativity and quantum mechanics. Physics based on what was known before then (Newton’s laws, Maxwell’s equations, thermodynamics) is called “classical” physics. This course traces in some detail just how the new ideas developed. But this is not just a course on concepts: the lectures and homework are sufficient to give the student a basic technical grasp of special relativity, and of Schrödinger’s quantum mechanics. Some Extra Course Materials The Lecture Notes on Special Relativity have been put together in one PDF File here. Old homeworks and exams can be found here.
BSE: 17,246.63 | NSE: 5,234.25 | NSE F&O: 5,256.90 - Rediff MoneyWiz New Hypothesis for Human Evolution and Human Nature Click on image for a high-resolution version. Domestic animals, like this water buffalo in Viet Nam, live intimately with humans and provide renewable resources to humans that communicate well with them. Photo by Greg Luna. 20 July 2010 — It's no secret to any dog-lover or cat-lover that humans have a special connection with animals. But in a new journal article and forthcoming book, paleoanthropologist Pat Shipman of Penn State University argues that this human-animal connection goes well beyond simple affection. Shipman proposes that the interdependency of ancestral humans with other animal species — "the animal connection" — played a crucial and beneficial role in human evolution over the last 2.6 million years. "Establishing an intimate connection to other animals is unique and universal to our species," said Shipman, a professor of biological anthropology. Shipman suggests that the animal connection was prompted by the invention of stone tools 2.6-million years ago. [ Kevin Stacey ]
The 50 Best How-To Geek Windows Articles of 2010 Even though we cover plenty of other topics, Windows has always been a primary focus around here, and we’ve got one of the largest collections of Windows-related how-to articles anywhere. Here’s the fifty best Windows articles that we wrote in 2010. Want even more? You should make sure to check out our top 20 How-To Geek Explains topics of 2010, or the 50 Windows Registry hacks that make Windows better. How to Customize Your Windows 7 Taskbar Icons for Any App Would you like to change out the icons on your taskbar with a beautiful set of icons that all go together? How to Customize Your Windows 7 Taskbar Icons for Any App Change the Windows 7 Taskbar Color Sure, you can hack Windows and install a custom theme if you really wanted to, or pay for a software package to do it for you. Change the Windows 7 Taskbar Color With No Extra Software (Stupid Geek Tricks) Change Your Windows 7 Taskbar Color the Easy Way (and Rotate Between Colors) How to Crack Your Forgotten Windows Password
Physics 621 BACK TO Galileo and Einstein HOME PAGE More Stuff! This is a grab bag of lectures, etc., that I've given at various times in the past that do not fit in well with Physics 109N or Physics 252 as I'm teaching them now. Much of this material was originally presented in summer courses for high school physics teachers. Using History to Teach Science: Virginia Beach presentation, January 11, 2000 Teaching Heat Physics Using Excel Physics 581 for High School Teachers, taught in the Summer of 1998, gave detailed instructions for constructing Excel spreadsheets to analyze a wide variety of dynamical phenomena, including projectiles with air resistance, and planetary orbits. I've also written notes on how to use it to solve a differential equation, Schrödinger's equation, in two of my Physics 252 homework assignments, here and here. Electricity and Magnetism This first lecture covers E&M from the earliest times up to Michael Faraday. Summer 1995 Lecture on Maxwell's Equations Some Math Applets! Quiz#1 Quiz#2
Cute tattoos 835 333 432 548 1710 197 284 581 1018 90 18 494 31 39 362 1313 31 302 327 517 159 282 2246 180 498 2998 4 176 467 38 73 311 228 527 28 130 403 1546 23 97 101 11 74 23 3029 1621 1497 857 784 496 62 503 832 64 421 1184 859 2288 267 83 400 298 1202 1134 1689 1082 202 27 291 120 1502 4505 2649 386 700 482 1305 504 480 349 1184 1471 791 464 1122 470 400 88 46 246 1439 1330 2486 561 374 610 732 Alligators: A Window Into An Ancient World How amazing is it that we have creatures as old as dinosaurs living in our midst? Close ancestors of the alligator survived the event that wiped out the dinosaurs about 65 million years ago and as this graphic from the History Channel and Column Five details, there are some fascinating and unusual facts about the large reptile. Thanks to alligators, we have a window into how ancient creatures looked and acted. Food for thought: while alligator populations are currently large in the southern US, a place where the temperature supports the proper range for hatching eggs, it’s interesting to note how small a change in global temperature would select only one sex of offspring (as sex is determined by temperature during incubation). Click here or the image below for a full sized view:
How Many Influence, Persuasion, Compliance Tactics & Strategies Are There? How many influence tactics exist? There were a number of attempts to create influence taxonomies in the 1980s, and the answer to the question depends on (you guessed it!) who you ask. There's even debate over how to think about the question. Some think we should be looking for basic, underlying dimensions to influence approaches. An example of an influence dimension would be that of social acceptability. So, the question "How many tactics are there?" To make the question even more difficult to answer, different researchers have used a variety of techniques and analyses to arrive at their various lists. Here's a list I've compiled of some researchers who have tried to answer the question, "How many influence dimensions (or clusters, tactics, families, principles, strategies, categories, etc.) are there?" You may notice the name of yours truly at the bottom of this list. Recently, there has been a backlash against attempts to define taxonomies of influence tactics.
Freuds *The Interpretation of Dreams* Chapter 1, Section D Back to Psych Web Home Page Back to The Interpretation of Dreams Table of Contents D. Why Dreams Are Forgotten After Waking That a dream fades away in the morning is proverbial. The forgetting of dreams is treated in the most detailed manner by Strumpell. In the first place, all those factors which induce forgetfulness in the waking state determine also the forgetting of dreams. * Periodically recurrent dreams have been observed repeatedly. According to Strumpell, other factors, deriving from the relation of the dream to the waking state, are even more effective in causing us to forget our dreams. Finally, we should remember that the fact that most people take but little interest in their dreams is conducive to the forgetting of dreams. It is therefore all the more remarkable, as Strumpell himself observes, that, in spite of all these reasons for forgetting the dream, so many dreams are retained in the memory. Jessen (p. 547) expresses himself in very decided terms: The observations of V.
60 insane cloud formations from around the world [PICs] Cloud varieties go way beyond the cumulus, stratus, and cirrus we learn about in elementary school. Check out these wild natural phenomena. STANDING IN A CORNFIELD IN INDIANA, I once saw a fat roll cloud (like #4 below) float directly over my head. It’s a 12-year-old memory that remains fresh. There was a moment of mild panic just as the cloud reached me — Is this what a tornado looks like right before it hits? I thought. I imagine a lot of these photographers having similar hesitations as they set up for the shots below.
Unusual quantum effect discovered in earliest stages of photosynthesis Quantum physics and plant biology seem like two branches of science that could not be more different, but surprisingly they may in fact be intimately tied. Researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory and the Notre Dame Radiation Laboratory at the University of Notre Dame used ultrafast spectroscopy to see what happens at the subatomic level during the very first stage of photosynthesis. "If you think of photosynthesis as a marathon, we're getting a snapshot of what a runner looks like just as he leaves the blocks," said Argonne biochemist David Tiede. "We're seeing the potential for a much more fundamental interaction than a lot of people previously considered." While different species of plants, algae and bacteria have evolved a variety of different mechanisms to harvest light energy, they all share a feature known as a photosynthetic reaction center.
Horrible Cards - The Oatmeal - StumbleUpon Horrible Cards are Copyright © 2012 Matthew Inman. Please don't steal. The Oatmeal Einstein for Everyone Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D. Norton Published by Nullarbor Press, 500 Fifth Avenue, Pittsburgh, Pennsylvania 15260 with offices in Liberty Ave., Pittsburgh, Pennsylvania, 15222 All Rights Reserved John D. An advanced sequel is planned in this series:Einstein for Almost Everyone 2 4 6 8 9 7 5 3 1 ePrinted in the United States of America no trees were harmed web*bookTM This book is a continuing work in progress. January 1, 2015. Preface For over a decade I have taught an introductory, undergraduate class, "Einstein for Everyone," at the University of Pittsburgh to anyone interested enough to walk through door. With each new offering of the course, I had the chance to find out what content worked and which of my ever so clever pedagogical inventions were failures. At the same time, my lecture notes have evolved. This text owes a lot to many. i i i
Invent Your Own Computer Games with Python - Chapters Chapter 1 Read online: Chapter 1 - Installing Python Videos: Chapter 2 Read online: Chapter 2 - The Interactive Shell Chapter 3 Read online: Chapter 3 - Strings Download source: hello.py Copy source to clipboard: Use the online diff tool to find typos in your code: hello.py Chapter 4 Read online: Chapter 4 - Guess the Number Download source: guess.py Use the online diff tool to find typos in your code: guess.py Chapter 5 Read online: Chapter 5 - Jokes Download source: jokes.py Use the online diff tool to find typos in your code: jokes.py Chapter 6 Read online: Chapter 6 - Dragon Realm Download source: dragon.py Use the online diff tool to find typos in your code: dragon.py Chapter 7 Read online: Chapter 7 - Using the Debugger Chapter 8 Read online: Chapter 8 - Flow Charts Chapter 9 Read online: Chapter 9 - Hangman Download source: hangman.py Use the online diff tool to find typos in your code: hangman.py Chapter 10 Read online: Chapter 10 - Tic Tac Toe Download source: tictactoe.py Chapter 11 Download source: bagels.py