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Chemistry Tutorials & Drills

Chemistry Tutorials & Drills

Wisdom and Humor: The Suslick Research Group The Three Laws of Thermodynamics (mathematically precise version) You can't win. You can break even only on a very cold day. It never gets that cold. Murphy's Seven Original Laws: In any field of scientific endeavor, anything that can go wrong, will go wrong. Levy's Nine Laws of the Disillusionment of the True Liberal —Marion J. Large numbers of things are determined, and therefore not subject to change. Aigner's Axiom: No matter how well you perform your job, a superior will seek to modify the results. The Airplane Law: When the plane you are on is late, the plane you want to transfer to is on time. Baruch's Observation: If all you have is a hammer, everything looks like a nail. Bedfellow's Rule: The one who snores will always fall asleep first. Berra's Second Law: Anyone who is popular is bound to be disliked. Blair's Observation: The best laid plans of mice and men are usually about equal. Bucy's Law: Nothing is ever accomplished by a reasonable man. The Bureaucracy Principle: Cole’s Law: 1. Mr. 1.

More Stupid Cat So there's this cat food commercial. Maybe you've seen it. A cat wanders into an empty kitchen and ambles toward a can of Friskies cat food. The lid suddenly pops off, sending magic glowing swirls all over the room. The cat watches them, mesmerized, because she's clearly stoned out of her mind. Then a mysterious portal opens up. The cat leaps through the portal, and finds herself in a brightly colored fantasy land. And even though it's only a 60-second commercial, this stoned cat manages to have a complete adventure, by land and by sea. Her journey eventually comes full circle, and a new portal leads the cat home, where she scarfs down some brown mush in a bowl. Seeing pet food commercials always makes me miss my cat Lola, this commercial in particular. Last time I was home, I brought her a little mouse toy full of catnip. After that she picked up the mouse in her teeth, carried over to the couch, and rolled around for several minutes in a hazy delirium. "Oh my god, Lola," I said.

John Conway's Game of Life The Game The Game of Life is not your typical computer game. It is a 'cellular automaton', and was invented by Cambridge mathematician John Conway. This game became widely known when it was mentioned in an article published by Scientific American in 1970. It consists of a collection of cells which, based on a few mathematical rules, can live, die or multiply. playgameoflife.com New developments of this page will continue on playgameoflife.com. playgameoflife.com The Simulation Figure from the XKCD RIP John Conway comic. The Rules For a space that is 'populated': Each cell with one or no neighbors dies, as if by solitude. Each cell with four or more neighbors dies, as if by overpopulation. Each cell with two or three neighbors survives. For a space that is 'empty' or 'unpopulated' Each cell with three neighbors becomes populated. The Controls Choose a figure from the pull-down menu or make one yourself by clicking on the cells with a mouse. Development Edwin Martin <edwin@bitstorm.org>

Visible Proofs: Forensic Views of the Body: Galleries: Media: Autopsy WARNING: Some people may find images from actual postmortem dissections disturbing. Viewer discretion advised. Videos on this page require either QuickTime Player or Windows Media Player. Postmortem dissection, or autopsy, was among the first scientific methods to be used in the investigation of violent or suspicious death. Beginning an autopsy New York University Medical Center, The Forensic Autopsy (New York, 1978). View with QuickTime: Low Quality | High Quality View with Windows Media Player: Low Quality | High QualityRead the transcript Dissecting and analyzing the body parts University of Calgary and the Office of the Alberta Attorney General, Investigating Sudden Death, vol. 1(Alberta, Canada, 1978–80). View with QuickTime: Low Quality | High Quality View with Windows Media Player: Low Quality | High QualityRead the transcript

Adam Smith, Wealth of Nations, Contents Introduction Chapter 1. Of the Division of Stock Chapter 2. Of Money considered as a particular branch of the general Society, or of the Expense of maintaining the National Capital Chapter 3. Chapter 4. Chapter 5. Introduction Chapter 1. Chapter 2. Chapter 3. Part 1. PART 2. CHAPTER 4. CHAPTER 5. CHAPTER VI Of Treaties of Commerce CHAPTER VII Of Colonies PART 1 Of the Motives for establishing new Colonies PART 2 Causes of Prosperity of New Colonies PART 3 Of the Advantages which Europe has derived from the Discovery of America, and from that of a Passage to the East Indies by the Cape of Good Hope CHAPTER VIII Conclusion of the Mercantile System CHAPTER IX Of the Agricultural Systems, or of those Systems of Political Economy which represent the Produce of Land as either the sole or the principal Source of the Revenue and Wealth every Country

Logorama - Pulp Fiction for Brands (by @baekdal) #design Here is something for all you brand freaks out there. The Logorama short film. It's not for kids, it's nasty, it's cruel - but it is incredibly well made. The film was directed by the French animation collective H5, Franois Alaux, Herv de Crcy and Ludovic Houplain. It was presented at the Cannes Film Festival 2009. (tip by Joseph R. Follow: 42Concepts Ten Principles To Live By In Fiercely Complex Times If you're like most people I work with in companies, the demands come at you from every angle, all day long, and you have to make difficult decisions without much time to think about them. What enduring principles can you rely on to make choices that reflect openness, integrity and authenticity? Here are ten that work for me: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Reprinted from Harvard Business Review Tony Schwartz is President and CEO of The Energy Project, a company that helps individuals and organizations fuel energy, engagement, focus, and productivity by harnessing the science of high performance.

Meaning of Halflife I'd like to illustrate what this really means. If living creatures had halflives the way radioactive atoms do, the world would be a very different place. What do you mean? Suppose there's an alien species with a halflife of, say, 70 years. That doesn't sound so weird. True...but remember that the halflife is always the same, regardless of how old the aliens are. That is kind of strange. It gets stranger. Methuselah isn't going to make it, though. Methuselah has just as much chance of surviving the next 70 years as any one of the 15 babies.

An Overview of Cryptography As an aside, the AES selection process managed by NIST was very public. A similar project, the New European Schemes for Signatures, Integrity and Encryption (NESSIE), was designed as an independent project meant to augment the work of NIST by putting out an open call for new cryptographic primitives. NESSIE ran from about 2000-2003. CAST-128/256: CAST-128, described in Request for Comments (RFC) 2144, is a DES-like substitution-permutation crypto algorithm, employing a 128-bit key operating on a 64-bit block. A digression: Who invented PKC? 3.3. Let me reiterate that hashes are one-way encryption. Hash algorithms that are in common use today include: Message Digest (MD) algorithms: A series of byte-oriented algorithms that produce a 128-bit hash value from an arbitrary-length message. A digression on hash collisions. Without meaning to editorialize too much in this tutorial, a bit of historical context might be helpful.

Mozilla Firefox Muscles are funny things. They respond to just about any type of training, as long as it's hard and as long as it's not the same damn thing you've always done. That's the beauty of density training: It's a whole lot of stuff you haven't tried yet. Unsure what exercises you should focus on? THE PLAN: Do three density workouts a week, with at least 1 day off in between. Pushup Assume a pushup position, with your hands slightly beyond shoulder-width apart, feet together, and body in a straight line from head to ankles. Reverse Lunge and 1-Arm Press Stand holding a pair of dumbbells next to your shoulders. Inverted Row Lie underneath a secured bar. Prisoner Squat Place your fingers on the back of your head, pull your elbows and shoulders back, and stand with your feet shoulder-width apart. Explosive Pushup Perform a basic pushup. Reverse Lunge with 1-Arm Press Perform a reverse lunge with your right leg as you simultaneously press the dumbbell in your right hand straight above your shoulder.

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