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Click on Schools Online to log into the 2011 Higher School Certificate Components Report for each school.This report indicates how consistently each individual student has performed across different components of the examination. The figures do not indicate the performance of an individual student relative to other students, but the student's performance in each component relative to his/her performance in other components. 

The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the change in frequency of a wave for an observer moving relative to the source of the wave. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. 

The scale of the experiment matches the scale of the intellectual leap achieved. A huge apparatus, 27 kilometres in circumference, buried 100 metres below the French-Swiss border near Geneva, accelerated particles in a near-perfect vacuum to speeds just below that of light and measured the effect of their collisions. Minute variations in energy released prove the existence of the Higgs boson, which had been postulated in theory by Peter Higgs in 1964 to explain the mass of elementary particles. Wednesday's discovery, published by two separate groups of researchers working in isolation from each other, can be compared with the discovery of DNA, or Einstein's theory of relativity, or the splitting of the atom. Achievements such as those are like peaks in a mountain range. They draw the world's attention, but really it is the great mass of the range itself that holds the peaks up which has more significance. Without the massive bulk below, the peaks would not reach so high. For science that great mass is a huge amount of lead-up work. The standard model of particle physics is the work of many hundreds of researchers, only one of whom was Professor Higgs. That achievement sits within the millions of achievements of the wider research effort of the whole science community. And that is enclosed, too, within the wider community which understands and supports what science has achieved and can achieve. Read more: http://www.smh.com.au/opinion/editorial/science-gets-a-chance-to-show-the-way-20120706-21mf2.html#ixzz21rjUGfs0

" Dim Lights Share a clea.nr URL: Hide Comments, Favorites, Suggested Videos, etc. There is a common perception that weight and mass are basically the same thing. This video aims to tease out the difference between mass and weight by asking people what makes a car difficult to push. The standard answer is that it is difficult to push because it's heavy. But heaviness is a measure of weight, the gravitational pull of the Earth attracting the car to Earth's center. When the car is pushed on a flat road, the force of gravity does not oppose the motion. Instead the resistance felt is an indication of the car's mass which determines its inertia. Inertia is the property of matter that means it tends to resist acceleration - the greater the mass, the less the acceleration for a given amount of force. Subscribe 109 videos 32,519 Like Add to Share Uploaded by 1veritasium on Feb 7, 2011 There is a common perception that weight and mass are basically the same thing. This video aims to tease out the difference between mass and weight by asking people what makes a car difficult to push. The standard answer is that it is difficult to push because it's heavy. But heaviness is a measure of weight, the gravitational pull of the Earth attracting the car to Earth's center. When the car is pushed on a flat road, the force of gravity does not oppose the motion. Instead the resistance felt is an indication of the car's mass which determines its inertia. Inertia is the property of matter that means it tends to resist acceleration - the greater the mass, the less the acceleration for a given amount of force. 320 likes, 14 dislikes Show more Uploader Comments ( 1veritasium ) Actually, it is the friction which is causing difficulty in moving the car. Ideally if there is no friction, whether rolling or sliding, even the slightest of the force would make the car move. You could actually be able to move the car with a push of your little finger if there is no friction at

Vid Description:"This scene from PBS's NOVA program, Episode "Einstein's Big Idea," demonstrates Albert Einstein's use of "thought experiments" to help visualize complex ideas at the forefront of science. This scene also shows Einstein as a young, passionate visionary, rather than as the stale, gray old man he is universally known as today." Students wanted to see the whole movie...please let me know if you come across it.

The head of a pin is about 2mm in diameter. Use this animation to compare the relative sizes of cells and organisms sitting on a pinhead. Nearly invisible without magnification, dust mites dwarf pollen grains and human cells. In turn, bacteria and viruses are even smaller.