I hear they’re think of doing this for tits as well.
Booby Cams Capture Young Seabird Social Lives
Miniature video cameras strapped to the backs of young brown boobies allow researchers to watch how they learn from other seabirds.
The video cameras captured footage of them chasing other juveniles and following adults to feeding areas. The juvenile boobies also mingled with other seabird species, like brown noddies, streaked shearwaters and black-naped terns.
Normally dry ice will sublime to gas, but that changes when you put it under pressure,
I must note that explosions such as this are begging to be filmed in slow-motion.
Here’s a pendulum demonstration that was part of an Exploratorium exhibit in the atrium of the Hyatt where I was attending a frequency & timing conference this past week. The bobs all start off in phase but since the period (or frequency) of a pendulum depends on \(sqrt{L} \) (or its inverse), the relative phases rapidly diverge. The bobs occasionally hit a condition that looks less chaotic, such as the slightly-out-of-phase S shape, and the condition where alternate bobs are 180ยบ out of phase. They then go back to the “S” before briefly all being in phase again. That occurs when they have all undergone an integral number of oscillations, with each one having undergone one more cycle as its neighbor as you move from the front to the back (long to short)
Here’s another video, via @JenLucPiquant with even more bobs.
Here’s what happens to CDs that will not turn to the dark side.
Feynman follows his nose to explain the mirror (aka parity)
Put two objects of unequal density on a balance, such that the scale reads that they have equal mass. Then evacuate the air.
Lesson: air creates buoyancy, too. The larger object displaces more air, so it actually has more mass, but also has slightly more buoyancy.
h/t to michel
The 2011 Purdue University Rube Goldberg machine shattered the world record for most steps ever successfully completed by such a machine. In 244 steps the “Time Machine” traces the history of the world from Big Bang to the Apocalypse before accomplishing the assigned everyday task of watering a flower
If it’s a three-minute egg
Director Philip Andelman traveled to Basel, Switzerland, to document the designer’s modern take of the classic hourglass inside the Glaskeller factory. Each hand made hourglass comprises highly durable borosilicate glass and millions of stainless steel nanoballs, and is available in a 10 or 60 minute timer.
I like glassblowing/fashioning. I went to the Corning Glassworks several times when I was a kid and never got tired of the tour, especially the part where the guy would make the little glass animals.