Physics & Astronomy News
A new study suggests that many theorized heavy particles, if they exist at all, do not have the properties needed to explain the predominance of matter over antimatter in the universe.
Scientists from EPFL and ETH Zurich have developed an ultra-light glove – weighing less than 8 grams per finger– that enables users to feel and manipulate virtual objects.
Astronomers from Lund University in Sweden have now found the explanation to a recent mystery at the centre of the Milky Way galaxy: the high levels of scandium discovered last spring near the galaxy’s giant black hole were in fact an optical illusion.
Scientists have discovered a novel particle acceleration mechanism called ‘micro-bubble implosion’
New insights into solar flares' explosive energy releases were released by the Owens Valley Solar Array (EOVSA)
Experiments that measure the lifetime of neutrons reveal a perplexing and unresolved discrepancy.
Scientists have created a tiny chemistry lab for a rover that will drill beneath the Martian surface looking for signs of past or present life.
Science Facts
How Fast is Mach 1?
by Anton Skorucak and ScienceIQ.com
A Mach number is a common ratio unit of speed when one is talking about aircrafts. By definition, the Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed medium through which the body is traveling.It is said that the aircraft is flying at Mach 1 if its speed is equal to the speed of sound in air (which is 332 m/s or 1195 km/hr or 717 miles/hour.) An aircraft flying at Mach 2 is flying at twice the speed of sound in air, etc. Mach numbers are named after Ernst Mach (1838-1916), an Austrian philosopher and physicist. The term Mach number came into use in 1929.
A Map of the Sky
Niagara Falls, the Grand Canyon, Old Faithful... we know they're spectacular sites, but how did we find out about them? Early explorers took the time to map out the United States and as a result, you ...
continue reading this fact
What Is Polarimetry?
Polarimetry is the technique of measuring the 'polarization' of light. Most of the light we encounter every day is a chaotic mixture of light waves vibrating in all directions. Such a combination is k ...
continue reading this fact
Tick-Tock Atomic Clock
Modern navigators rely on atomic clocks. Instead of old-style springs or pendulums, the natural resonances of atoms -- usually cesium or rubidium -- provide the steady 'tick' of an atomic clock. The b ...
continue reading this fact
Support US
Our server costs have gone up and our advertising revenue has gone down. You do the math! If you find our site useful, consider donating to keep us going. Thanks!
Science Quote
'There must be no barriers for freedom of inquiry. There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors.'
J. Robert Oppenheimer
(1904-1966)
