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Latest Physics Stories

New Method Could Make Sub-wavelength Images At Radio Frequencies
2014-06-18 03:12:08

By Laura Ost, National Institute of Standards and Technology (NIST) Imaging and mapping of electric fields at radio frequencies (RF) currently requires the use of metallic structures such as dipoles, probes and reference antennas. To make such measurements efficiently, the size of these structures needs to be on the order of the wavelength of the RF fields to be mapped. This poses practical limitations on the smallest features that can be measured. New theoretical and experimental work...

Researchers Demonstrate Strange Physics Turns Off laser
2014-06-18 03:25:07

By Steven Schultz, Princeton University Inspired by anomalies that arise in certain mathematical equations, researchers have demonstrated a laser system that paradoxically turns off when more power is added rather than becoming continuously brighter. The finding by a team of researchers at Vienna University of Technology and Princeton University, could lead to new ways to manipulate the interaction of electronics and light, an important tool in modern communications networks and...

2014-06-18 09:46:56

Berkeley Lab 2D Electronic-Vibrational Spectroscopy Technique Provides Unprecedented Look into Photochemical Reactions From allowing our eyes to see, to enabling green plants to harvest energy from the sun, photochemical reactions – reactions triggered by light – are both ubiquitous and critical to nature. Photochemical reactions also play essential roles in high technology, from the creation of new nanomaterials to the development of more efficient solar energy systems. Using...

2014-06-17 23:12:36

Superior Magnetics for Pain Free Living released a new line of magnetic jewelry that uses ultra strong ion neodymium magnets for pain relief in seconds Concord, New Hampshire (PRWEB) June 17, 2014 Pain Free Living (web: http://www.SuperiorMagnetics.com) has released a new line of 5200 Gauss magnetic jewelry. These magnetic bracelets, magnetic necklaces and magnetic anklets are designed with the strongest magnets to relieve pain in seconds. Pain Free Living is the developer of Superior...

2014-06-17 23:07:23

Pittcon 2015 will participate in the International Year of Light efforts to promote awareness for light-based technologies as an Associate Sponsor. Pittsburgh, PA (PRWEB) June 17, 2014 The Pittcon Organizing Committee is pleased to announce its participation in the International Year of Light initiative at the Associate Sponsor level. The United Nations (UN) General Assembly 68th Session has proclaimed 2015 as the International Year of Light and Light-based Technologies (IYL 2015). In...

2014-06-17 23:05:46

GIA announces the release of a comprehensive global report on Laboratory Refrigerators and Ovens markets. Global market for Laboratory Refrigerators and Ovens is projected to reach US$1.3 billion by 2020, buoyed by rising R&D spending in the life sciences sector, evolving clinical and cryo-biological applications, and effervescent technology and product innovation. San Jose, California (PRWEB) June 17, 2014 Follow us on LinkedIn – Refrigerators are a critical equipment for research...

2014-06-17 16:22:36

FORT WORTH, Texas, June 17, 2014 /PRNewswire/ -- Basic Energy Services, Inc. (NYSE: BAS) announced today that its management will be presenting at the Global Hunter Securities 100 Energy Conference to be held in Chicago, Illinois on June 24 - 25, 2014. Roe Patterson, President and Chief Executive Officer, is scheduled to present on Tuesday, June 24, 2014, at approximately 8:30 a.m. Central Time (9:30 a.m. Eastern Time). A link to the live webcast and replay for this presentation will...

How Did Algae Evolve To Switch Quantum Coherence On And Off?
2014-06-17 03:02:59

University of New South Wales A UNSW-led team of researchers has discovered how algae that survive in very low levels of light are able to switch on and off a weird quantum phenomenon that occurs during photosynthesis. The function in the algae of this quantum effect, known as coherence, remains a mystery, but it is thought it could help them harvest energy from the sun much more efficiently. Working out its role in a living organism could lead to technological advances, such as...

2014-06-17 12:26:36

Carefully fabricating nanofibers by heating and pulling may make for highly-efficient, optics-based, low-power atom traps WASHINGTON, June 17, 2014 /PRNewswire-USNewswire/ -- Take a fine strand of silica fiber, attach it at each end to a slow-turning motor, gently torture it over an unflickering flame until it just about reaches its melting point and then pull it apart. The middle will thin out like a piece of taffy until it is less than half a micron across -- about 200 times...

2014-06-17 12:23:14

MIT Researchers Make Novel, High Sensitivity Optical Sensors that Swell When Exposed to a Target Gas -- Potential Industrial, Security, Environmental, and Medical Applications WASHINGTON, June 17, 2014 /PRNewswire-USNewswire/ -- Using microscopic polymer light resonators that expand in the presence of specific gases, researchers at MIT's Quantum Photonics Laboratory have developed new optical sensors with predicted detection levels in the parts-per-billion range. Optical sensors are...


Latest Physics Reference Libraries

Nuclear Fallout
2013-04-01 10:26:30

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...

Cosmology
2014-01-12 00:00:00

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...

Astrophysics
2014-01-12 00:00:00

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...

Basic Ocean Terms
2013-02-05 12:52:11

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...

How Solar Cycles Impact Our Weather Here On Earth
2013-01-13 09:10:34

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...

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Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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