A couple of weeks ago, I posted an #animation of a point on a circle generating a #cycloid.
If you turn the curve "upside down", you get the #BrachistochroneCurve. This curve provides the shortest travel time starting from one cusp to any other point on the curve for a ball rolling under uniform #gravity. It is always faster than the straight-line travel time.
Anyway, the #animation took a bit of thought as it requires a bit of #Mechanics, some #Integration and is made a bit more tricky as the curve is multi-valued and so you need to treat different branches separately. The #AnimatedGif was produce with #WxMaxima.
German mineralogist and physicist Franz Ernst Neumann died #OTD in 1895.
Neumann made significant advances in the mathematical understanding of crystal structures & their physical properties. His work laid the groundwork for the field of crystallography. He also developed the concept of the piezoelectric effect in crystals.In 1831, he established the Neumann's Law: the molecular heat of a compound is equal to the sum of the atomic heats of its constituents.
Particle physics and cosmology go hand-in-hand, despite the vast difference in scales. So when something new starts brewing in the quantum world, we pay attention. On this week’s Big Picture Science - could physics experiments take us “Beyond the Standard Model?”
This is quite interesting. (no... really!) I recently persuaded a colleague to take my pet Geiger counter from Dunedin to Apia via Auckland. The latitude dependency of the radiation exposure is fascinating! #radiation#NewZealand#physics
#ChatGPT4o told me to call the manager. So much for sneaking in and discovering glueball particles on my own. This stinks. I want my money back, #ChatGPT!
French mathematician and engineer Gaspard-Gustave de Coriolis was born #OTD in 1792.
He is best known for his work on the supplementary forces that are detected in a rotating frame of reference, leading to the Coriolis effect. He was the first to apply the term "work" for the transfer of energy by a force acting through a distance, and he prefixed the factor ½ to Leibniz's concept of vis viva, thus specifying today's kinetic energy.
Something interesting is rumbling in the physics community. Are we on the brink of discovering a new force of nature? At least one particle physicist thinks so. We venture “Beyond the Standard Model” on Big Picture Science.
French physicist Jean-Pierre Christin published the design of a mercury thermometer using the centigrade scale with 0 representing the melting point of water and 100 its boiling point.
Available at : Annales des sciences physiques et naturelles, d'agriculture et d'industrie
By Société d'agriculture, sciences et industrie de Lyon. via @googlebooks
Entropy balance and time travel in the MCU
(need to know the concept of entropy and homeostasis, and the previous principles of MCU)...