By: Earl King
WHAT KEEPS A SHIP AFLOAT Prior to the late 19th century, anyone could answer the question, "What keeps a ship afloat?". It's made of wood and wood floats. Later toward the end of the century, iron and then steel became the construction material of...
By: Barnaby Meins
In physics, charge, also known as electric charge or electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons. In atoms, the electron carries a negative elementary or...
By: Barnaby Meins
The electron carries a negative elementary or unit charge while the proton carries a positive charge in an atoms, the basic unit of matter. The two types of charge are equal and opposite. The unit of electrical charge in the International System of Units is...
By: Barnaby Meins
The fundamental working principle of magnetic resonance imaging (MRI) is based on the induction of proton spin and the detection of the proton spin response when radio frequency pulse is emitted. Protons in water and fat inside the human body act as magnetic dipoles (small...
By: Lydia Black
Protons are tiny. A proton has a diameter of just 1 femtometer, or 0.000000000000001 meters. This is around 100,000,000,000 times smaller than this dot:. So, looking inside protons requires great ingenuity.In normal life we can use visible light to study...
By: John Welford
There are two Ramanujan prizes, both of which were first awarded in 2005, and both of which are for 10,000.The Ramanujan Prize offered by the Shanmugha Arts, Science, Technology and Research Academy (SASTRA) of Thanjavur, Tamil Nadu, India, is awarded annually to a...
By: Gerhard Adam
Radioactivity is dangerous to biological organisms and needs to be evaluated based on the frequency and magnitude of the exposure. There is always the point about doing a risk/benefit analysis but there seems to be some serious misunderstandings about what radioactivity actually is and how...
How to build your own laser
By: Jarn
"Building Your Own Laser"A laser is defined as an optical device which emits a beam of light radiation. Unlike light from other natural and artificial sources, a laser is monochromatic, meaning it only casts light of a very specific wavelength. If the wavelength were in...
By: Prof. George Monaco
Most scientists aren't household names, but Albert Einstein was one-of-a-kind. He became a worldwide celebrity not just for his work in physics, but also for his personality. People's image of the friendly, absent-minded science professor with sloppy hair that's all based on Einstein! Today his...
By: Jonte Rhodes
Microwaves are common in every home, and are used to cook or defrost all manner of foods. But there are actually a lot more things that they can do for us, which most people don't seem to know about. For example because of the way...

 

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