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Super proud of two of my younger students who completed their first Tesla coil. For many physics and engineering students, from high school through graduate school, building something like a Tesla coil is a right of passage. It's been over a century and a quarter since Nikola Tesla first created a high frequency high voltage tunable LC resonant transformer, but there is still an art and finesse to designing and building such a device so that century-old methods still apply. Despite our modern advances with high-frequency and high voltage transistors, the old methods of hand-winding coils and making saltwater-bottle capacitors still provide a tangible connection to the physics of electromagnetism that is hard to replicate with semiconductor devices. Anyone who has attempted such a device knows the satisfaction felt by these young ladies when they saw purple lightning emanate from a coil of almost a thousand turns of magnet wire wound by hand. (JPOD 136)
Photos of various physics labs going on in the physical sciences building on the campus of Eastern Illinois University in Charleston, Illinois on September 16, 2010. (Jay Grabiec)
The Physics Department on the campus of Eastern Illinois University in Charleston, Illinois on October 23, 2019. (Jay Grabiec)
Comparing electrical and gravitational forces.. and the time it takes light to travel the width of a proton!
All the doodles in this gallery are from the sixtysymbols.com video project and were usually drawn by physicists while they were being filmed.
Clemson University lecturer of physics and astronomy Dr. Amber Porter teaches a class, “The Birth of Stars”, in the Kinard Laboratory of Physics, Sept. 20, 2016. (Photo by Ken Scar)
This is a picture of a bicep curl which demonstrates the physics and biomechanics of the human body. The tension force downward is the product of the weight and gravity. James must overcome this tension by applying a greater upward force on the weight. The biceps muscle attaches on the forearm and acts as a lever to pull the arm up. At ninety degrees, James is experiencing the maximum amount of tension because the torque is the greatest because it is at the longest possible moment arm at 90 degrees.
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Freezing marshmallows and cookies in liquid nitrogen, and then blowing frigid smoke while eating them.
Pictures taken on the occasion of the X Brijuni Conference, August 28th - September 1st, 2006, on "Imaging in Space and Time", Brijuni Islands, Croatia