Hammering Rubber Nails With a Mercury Hammer [Video]

Mercury is beautiful. It’s the only metal that’s a liquid at room temperature and pressure. In its liquid state the atoms have enough thermal energy to overcome the rigid metallic bonds that confine most metals to solids at room temperature. The third law of thermodynamics links temperature and entropy. Olympia Brown explores this relationship, freezing […]


The Year in News: What Happened Next (Stories From March-April 2016)

Let’s continue our look back at some of the news stories we’ve covered here at GaS in 2016 as well as following up on later developments. In March the Department of Defense launched a challenge for “white hat hackers” to try to breach their computer systems. Sensibly enough it was limited to approved US participants […]

Look at My Dob: A Rap about Dobsonian Telescopes [Video]

My pal Coma Niddy is back from the dead, and today, he teaches us all about Dobsonian telescopes in his latest song: Look at My Dob! A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson starting in the 1960s and credited with vastly increasing the size of telescopes available to amateur […]