Physical Sciences

Voyager 1 Reaches Interstellar Space

Don Gurnett, on the left, during his talk at the Dartmouth physics colloquium. Photo: Merritt Losert '17

On Friday, April 4, Don Gurnett, a professor of physics and astronomy at the University of Iowa, gave a talk about the history and science of the Voyager missions. The Voyager probes have been two of the most important ever launched. They explored the far reaches of the solar system,...

 
 

The Chelyabinsk Asteroid

The Chelyabinsk Asteroid

This February, the largest asteroid since 1908 impacted the planet’s surface near the city of Chelyabinsk in the Urals region of Russia (Figure 1). In an article published in Nature, Quirin Schiermeier reported that the asteroid shone 30 times brighter than the Sun and moved through the Earth’s upper atmosphere...

 
 

Nanoparticles: Designing Medicine at the Molecular Level

Six chemotherapy drugs commonly used to treat cancer.  Advances in nanoparticle technology will help reduce the awful side effects of these drugs.
Source: Wikimedia Commons

The greatest problem with traditional cancer treatments is lack of specificity. Treatments such as radiation therapy and chemotherapy kill healthy cells along with tumor cells, causing negative side effects in patients (1). Scientists believe that nanotechnology-based treatments can solve the issue of specificity. Nanoparticles used to treat cancer are approximately...

 
 

Lewis Acids Find a Role in Fluorocarbon Remediation

Chemists developed a new form of Lewis acid capable of effective hydrodefluorination. Source: http://www.flickr.com/photos/horiavarlan/

Caputo et al. recently developed a Lewis acid, [(C6F5)3 PF]+, which has proven highly effective in hydrodefluorination, the conversion of a carbon-fluorine bond into a carbon-hydrogen bond. A Lewis acid is any substance which can accept an electron pair, while a Lewis base is any substance which can donate an...

 
 

Perceiving Time

Perceiving Time

The nature of time is a hard thing to define because one perceives it as an inescapable fact: tomorrow always comes. But will there ever be a day in which tomorrow does not come? What is the nature of the end of time? In addition, could there be people who...

 
 
 
 
 

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