A team of Williams College faculty and students is preparing to scientifically observe the total eclipse of the Sun that will sweep across the far side of Earth on March 29. Six undergraduates are joining Jay Pasachoff, Bryce Babcock, and Steven Souza of the astronomy and physics departments, who have worked together on a series of expeditions, most recently to study Pluto and its moon Charon.
The expedition is to Kastellorizo, a small island east of Rhodes in the Greek Dodecanese. Aside from Cyprus, it is the farthest eastern point of Europe, so many eclipse watchers are expected to travel there. The Williams group will be on site a week in advance to set up, test, and align its nearly ton of equipment. They are working closely with Professor John Seiradakis of the Aristotelian University of Thessaloniki, continuing a collaboration begun with joint observations there of the 2004 transit of Venus.
Pasachoff, chair of the International Astronomical Unions Working Group on Eclipses, will be observing his 42nd solar eclipse. He is Field Memorial Professor of Astronomy and director of the Hopkins Observatory at Williams. Babcock is coordinator of science facilities and staff physicist; Souza is instructor of astronomy and observatory supervisor. They last observed an eclipse in 2002 in Australia. The total solar eclipses since then have been visible only from Antarctica in 2003 and the mid-Pacific in 2005, preventing the use of complex equipment.
Significantly more productivity in USP lasers
06.12.2016 | Fraunhofer-Institut für Lasertechnik ILT
Shape matters when light meets atom
05.12.2016 | Centre for Quantum Technologies at the National University of Singapore
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
07.12.2016 | Health and Medicine
07.12.2016 | Life Sciences
07.12.2016 | Health and Medicine