Niels Bohr and his quantum postulates
By: John Brown - 591004
Before Niels Bohr: in the classic physics, the world is described by a few equations that govern a set of continuous quantities or fields. It assumed that there is a smaller portion of anything, but maybe out of our measurement capability to see it. This...
Contrasting the photoelectric effect and the Compton effect
By: Barnaby Meins
The photoelectric effect refers to the emission of electrons when electromagnetic radiation is incident on a metal surface. In an electric circuit consisting of a photocell, when electromagnetic radiation, such as ultraviolet rays is incident on a photocell, an electric current flows and the current...
Book reviews: Is God a Mathematician? by Mario Livio
By: Dyana Hepburn
Is God a Mathematician by Mario Livio, © 2009, First Simon and Schuster hardcover edition January 2009. "Is God a Mathematician?" by Mario Livio has an enticing title. It appeals to persons of a religious nature, those interested in the concept of God as...
Biography: Pierre-Simon Laplace
By: D. Vogt
Pierre-Simon Laplace (1749-1827) was a French mathematician of the late Enlightenment period, as well as a political figure in post-revolutionary France (where he earned the title marquis during the short-lived Bourbon Restoration). He was responsible for a number of important innovations in physics and astronomy...
Can Molecules be Changed to Atoms
By: John Brown - 591004
"To be or not to be" that is the question. What about "To atoms or not to Atoms"? The question seems very obvious, but at the same time is very tricky if we take it literally. I don't know what has in his mind the...
By: Leigh Goessl
Well-known British physicist Stephen Hawking is back in the news again with statements which proclaim God was 'not needed' to create the universe. Previews of the scientist's soon to be released book, "The Grand Design", were released prior to the release date and published by...
Stephen Hawking says God was 'not needed' to create universe
By: D. Vogt
In the last several years, famous retired Cambridge physicist Stephen Hawking has made headlines several times for advancing claims which seem bold, even if they are largely restating conclusions long held by a large number of his professional colleagues. He has, for instance, suggested that...
The Large Hadron Collider: Greatest physics experiment in the world
By: Tenebris
On March 30, 2010, two beams collided at 7 TeV at the Large Hadron Collider, setting the world record for the highest energy man-made particle collisions to date. The first article based on previous, lower energy LHC collisions has been completed as of March 7...
A guide to simple and compound machines
By: Pratik Vaidya
Simple machines help us in everyday tasks such as opening a door, getting to school, or even washing your clothes. A simple machine is a device that either multiplies or redirects force. There lies a difference between simple and compound machines. Compound machines are just...
Ergonomics defined
By: Gene Patterson
What is ergonomics? Ergonomics is a study scientific study of ways to design and set up items so that people are less likely to develop Repetitive Strain Injuries. These injuries can cause a lot of pain and may eventually lead to a loss of work...

 

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