Physics Flash Animations We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from In addition, I have prepared a small tutorial in using Flash to do Physics animations. LInks to versions of these animations in other languages, other links, and license information appear towards the bottom of this page. The Animations There are 99 animations listed below. Other Languages and Links These animations have been translated into Catalan, Spanish and Basque: En aquest enllaç podeu trobar la versió al català de les animacions Flash de Física. These animations were written by David M.
Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. Smaller cells are easily visible under a light microscope. To see anything smaller than 500 nm, you will need an electron microscope. Adenine The label on the nucleotide is not quite accurate. How can an X chromosome be nearly as big as the head of the sperm cell? No, this isn't a mistake. The X chromosome is shown here in a condensed state, as it would appear in a cell that's going through mitosis. A chromosome is made up of genetic material (one long piece of DNA) wrapped around structural support proteins (histones). Carbon The size of the carbon atom is based on its van der Waals radius.
64 Things Every Geek Should Know - laptoplogic.com The term ‘geek’, once used to label a circus freak, has morphed in meaning over the years. What was once an unusual profession transferred into a word indicating social awkwardness. As time has gone on, the word has yet again morphed to indicate a new type of individual: someone who is obsessive over one (or more) particular subjects, whether it be science, photography, electronics, computers, media, or any other field. A geek is one who isn’t satisfied knowing only the surface facts, but instead has a visceral desire to learn everything possible about a particular subject. A techie geek is usually one who knows a little about everything, and is thus the person family and friends turn to whenever they have a question. If you’re that type of person and are looking for a few extra skills to pick up, or if you’re a newbie aiming to get a handhold on the honor that is geekhood, read on to find out what skills you need to know. 1. USB – Universal Serial Bus GPU – Graphics Processing Unit 2. 3.
Transit Agencies We’ve been following the trend of transit agencies providing developer access to timetables, routes and more for some time. Big cities, like New York and Boston are on board and helping fuel new transit applications. There now seems to be more momentum, with organizations and influencers making the call for open data. StreetFilms talked to some of these people, several within transit companies themselves, and created A Case for Open Data (embedded below). One particular case study shows just how fast developers started in on projects when Boston made its data available. “If you take the model of the national weather service and apply it to the transit agencies you realize you can have just as many ways to get transit information as you do to get weather information. When we profiled the developer who is trying to open transit data earlier this year, City-Go-Round showed 91 agencies with public data. But it’s a good sign when big metros get behind open transit data. via Jehiah
Category As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Best wishes, The Oracle Education Foundation "The Elements". A Flash animation The Periodic Table The periodic table of the chemical elements (also periodic table of the elements or just the periodic table) is a tabular display of the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869, who intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior. The periodic table is now ubiquitous within the academic discipline of chemistry, providing a useful framework to classify, systematize, and compare all of the many different forms of chemical behavior. The layout of the periodic table demonstrates recurring ("periodic") chemical properties. As of 2010, the table contains 118 chemical elements whose discoveries have been confirmed.
SARCASM IN RELATIONSHIPS Sarcasm – a mocking or ironic remark (American Heritage Dictionary) Irony – the use of words to convey the opposite of their literal meaning (American Heritage Dictionary) Sarcasm is a large component of social interaction and conversation. Sarcasm is an indirect form of speech intentionally used to produce a particular dramatic effect on the listener (McDonald, 1999, p. 486). Many people relate sarcasm to irony, but there is a big difference between the two. The subject of sarcasm is complex because many factors are involved. Negative sarcasm, where positively worded utterances convey negative attitudes, is used frequently in everyday language. Sarcastic remarks, like this, are usually accompanied by exaggeration, and intensifiers may be used on the words that state the opposite of how one truly feels. Sarcasm has been found to be “morphologically simpler and more flexible to use than direct forms” (McDonald, 1999, 487). People have different views of sarcasm in relation to humor.
Physics Simulation with Java The Experience and Perception of Time What is ‘the perception of time’? The very expression ‘the perception of time’ invites objection. Insofar as time is something different from events, we do not perceive time as such, but changes or events in time. But, arguably, we do not perceive events only, but also their temporal relations. So, just as it is natural to say that we perceive spatial distances and other relations between objects (I see the dragonfly as hovering above the surface of the water), it seems natural to talk of perceiving one event following another (the thunderclap as following the flash of lightning), though even here there is a difficulty. For what we perceive, we perceive as present—as going on right now. Kinds of temporal experience There are a number of what Ernst Pöppel (1978) calls ‘elementary time experiences’, or fundamental aspects of our experience of time. Duration The inference model may be plausible enough when we are dealing with distant events, but rather less so for much more recent ones.