Latest Physics Stories
EVERETT, Wash., April 28, 2015 /PRNewswire/ -- Unfors RaySafe, the global leader of X-ray quality assurance solutions, released a new radiation Survey sensor aimed at expanding the RaySafe X2
A team of engineers from Northwestern University has developed a nanoscale laser that uses liquid to generate its high-intensity beam of light, according to a new report in the journal Nature Communications.
One of the enduring themes of science fiction is the galactic empire: Thousands of star systems tied together by gleaming spaceships hurtling through the cosmos. And why not? Civilization on Earth progressed from hunter-gatherers eking out a bare existence to planet-spanning empires over the course of a few thousand years. Surely our next step will be to colonize the Galaxy.
At first glance, there is not the slightest doubt: to us, the universe looks three dimensional. But one of the most fruitful theories of theoretical physics in the last two decades is challenging this assumption. The "holographic principle" asserts that a mathematical description of the universe actually requires one fewer dimension than it seems. What we perceive as three dimensional may just be the image of two dimensional processes on a huge cosmic horizon.
From mobile phones and computers to television, cinema and wearable devices, the display of full color, wide-angle, 3D holographic images is moving ever closer to fruition, thanks to international research featuring Griffith University.
Venus' surface is so hostile that normal equipment can't look for earthquakes. So seismologists have turned to using infrasonic sound waves to detect earthquakes on the hellish planet.
Pew pew pew! The US Army has developed an attachment for its M4 assault rifle that basically converts the weapon into a ray gun capable of disability electronics and circuit boards from a distance.
Increasing demand for better fuel efficiency and up-gradation to electric power steering systems are factors influencing the growth of the European Torque Sensor market.
For the last ten years or so, scientists have been looking for ways of culturing cells in laboratory settings that better reflect that complexity. Researchers from Brown University have recently made a major breakthrough in the search. They have developed a technique which creates tiny wrinkles in sheets of graphene. This produces new textured surfaces for culturing cells.
Nuclear fallout, or just simply fallout, known also as Black Rain, is the residual radioactive material that is propelled into the upper atmosphere after a nuclear black or a nuclear reaction that is conducted in an unshielded facility. It is so called because it "fall out" of the sky after the explosion and the shock wave have passed. It most commonly refers to the radioactive dust and ash that is created when a nuclear weapon explodes, but such dust can also come from a damaged nuclear...
Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...
Image Caption: NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light-years in diameter and approximately 60 million light-years distant. Credit: NASA/ESA/Wikipedia What is Astrophysics? For much of the modern age the term Astrophysics has been used synonymously with Astronomy. This interchange is so common that many textbooks even offer the two as having the same meaning. However, from a strictly historical perspective there are differences...
Image Credit: Meteorologist Joshua Kelly When meteorologists are forecasting for ocean-going vessels, there are a few terms that we need to understand. The first term is wavelength. Wavelength is defined as the distance between two crests or between two troughs as seen in the image above. The example above highlights the crest to crest concept of wavelength. The next term that we use is wave height, and to determine this, we first must look at the wave when it passes our station. When...
Solar cycles: what are they and why should we care about them? Solar cycles are made up of what are known as solar minimums (min) and solar maximums (max). We refer to a solar min at the time when the sun is not active with many sunspots, while a solar max is just the opposite when we see a large increase in sunspot activity. So how long do solar cycles last? Typically they run on what is known as an 11 year cycle from the max to the min and then start over again anew. As of 2012 we...
- To say in too many words; to express verbosely.
- To express in too many words: sometimes used reflexively.
- The leading idea or a repeated phrase, as of a song or ballad; the refrain; burden.