Blue Sun

The Astronomy Picture of the Day site has this cool image of the sun.  The visible spectrum of hydrogen has 4 lines called the Balmer Series. I can see at least three of them myself, but the fourth is on the edge of my eyesight.  To me the lines have the colors Red (656 nm), Blue (486 nm), Violet (434 nm) and Violet (410). This picture was take using a filter that only lets through the Hydrogen Alpha line, and then color inverted to appear blue.  I'm not sure why they changed the color, but it looks cool.  Take a look at the larger version of this picture at the link.

Image Credit & Copyright: Alan Friedman (Averted Imagination)
Link APOD: 2009 November 4 - Blue Sun Bristling

Guitar Duet with only One Guitar

This looks a little awkward, but the amazing thing is that some times his left hand is fretting the strings that she is playing, and she is fretting the strings that he is playing.  When I play, both hands are working in synch - I would think it would be hard to NOT have both hands playing the same strings.

via Neatorama

Symmetry is Not A Spectator Sport

We just finished discussing Stereochemistry in my Organic class.  Since stereochemistry ultimately boils down to a matter of symmetry, this seems like an opportune time to show this video.

32 Years Without Small Pox

It has been 32 years since a case of Small Pox was last diagnosed.  According to Wikipedia:

The last naturally occurring case of indigenous smallpox (Variola minor) was diagnosed in Ali Maow Maalin, a hospital cook in Merca, Somalia, on 26 October 1977. The last naturally occurring case of the more deadly Variola major had been detected in October 1975 in a two-year-old Bangladeshi girl, Rahima Banu.

We have heard a lot about vaccines in the last few years.  The fact is: vaccines work. The Variola major version of Small Pox has (had?) a mortality rate of 30-35% - out of every three people who got the virus, one died.  In the 20th century, it is estimated that 300-500 million deaths were caused by small pox.  Because of the small pox vaccine, no one gets this disease. Anywhere in the world.

(Image: wikimedia commons)

Via An Anniversary Worth Celebrating – Neatorama

A Timely Video for Lab Day: Safety Song

Made by some UC Berkeley Grad students. See more of their work at The Sounds of Science.

via Safety Song: musical number about lab safety - Boing Boing

Drug Microscopy from the Wellcome Image Awards

Image: Annie Cavanagh and Dave McCarthy

Cool image of polymer-coated drug particles taken with an electron microscope. It looks like some sort of modern art piece.  Originally in black and white, the color was added later: the drug is orange and the polymer blue.  From this year's Wellcome Image Awards.

According to judging panel member Catherine Draycotte:

"One of the reasons this image stood out as extraordinary is because it doesn't look like a natural image. It doesn't look as though it could possibly come from a microscope - it looks as though it must be computer-generated.

"This is because the particles - and those within them - are so smooth: they are artificial and have virtually no texture. The image really shows what technology can do in targeting drugs to specific purposes. This system is designed to delay the release of the drug that is contained in the smaller particles until it reaches the large intestine, where it will treat inflammatory bowel disease."

Wellcome Image Awards 2009 | Winners' gallery | Scientific and medical images

Commercial green fuel from algae still years away

Scientists and investors are lured by the pond scum's natural oils that can be extracted and refined into fuel.

Algae grows fast and absorbs greenhouse gases along the way. Plus, the lowly lifeform uses less land, water and other resources than the corn or soybeans used in first generation biofuels, alleviating concerns that those renewable fuels would cause food shortages.

It's disappointing that this may take a decade to be practical, but it seems like a no-brainer to use algae rather than terrestrial plants as a source for renewable bio-fuels.

via Slashdot: Commercial green fuel from algae still years away | Reuters