Sign up: http://bit.ly/3sFnWjX ✨ #iteachmath #iteachphysics
First #circuits lab setting up power supplies and stuff. Students keep connecting an ammeter in parallel. #iteachphysics
Sometimes it's easier to just model something than it is to draw it. Here's a #python program to show some orbits along with a #spaceelevator #physics #iteachphysics
[2506.07872] Teaching special relativity in elementary physics or upper high school courses
#ITeachPhysics #Relativity
This paper aims to provide teachers with a tool to teach the essential features of special relativity, considering the students' difficulties highlighted by numerous studies. Our proposal presents special relativity as the solution to the troubles of Newtonian dynamics, exemplified by the infinities of Newtonian uniformly accelerated motion. The paper's main section uses thought experiments with the exchange of flashes of light of null duration between two inertial reference frames to derive the kinematics effect of special relativity (time dilation, length contraction, Doppler effect, relativity of simultaneity, and Lorentz transformations). Simulations illustrate the results of the simple calculations. The discussion of experimental corroborations of the kinematics effects of special relativity complements the theoretical treatments. The Doppler effect, typically treated within the wave description of light, is addressed as an application of energy and linear momentum conservation during the emission or absorption of a photon by an atom (or a nucleus). When opportune, the paper suggests implementing teaching practices in the topics developed for teachers. Two of us' preliminary tests in the classroom ask for a wider one, including standard evaluation procedures of students' learning.
[2408.07036] Visual relativistic mechanics
#ITeachPhysics #Relativity
This article shows how to express relativistic concepts in a visual manner using the full power of hyperbolic trigonometric functions. Minkowski diagrams in energy-momentum space are used in conjunction with hyperbolic triangles. Elegant new derivations of the relativistic rocket equation and the relativistic Doppler effect are presented that use this visual approach.
#FediLZ #BlueLZ #PhysikEdu #MintEudu #Physik #iteachphysics #Energiewende #Kernfusion #Solar #Solarenergie #Photovoltaik #PV
Schon beeindruckend, wenn man der #Kernfusion auf der #Sonne so bei der Arbeit zuschauen kann.
Und die Dimensionen dieser Flares im Vergleich zur Größe der Erde kann man sich ja kaum vorstellen.
Unsere Sonne ist schon ein krasses Teil…
Und im Vergleich zu anderen Sternen ja eher durchschnittlich…
;-)
https://de.wikipedia.org/wiki/Sonneneruption
Quelle: https://mastodon.social/@wonderofscience/114633555060360966
New #physics #astrophysics video - why can't you make a #spaceelevator cable out of steel? #iteachphysics
#FediLZ #BlueLZ #PhysikEdu #MintEudu #Physik #iteachphysics
Der Versuch „Knick in der Optik“ ist ein Klassiker der Schulphysik zum Thema „Brechung von Licht“.
Die Aufgabe: Das Zielfernrohr so einzustellen, dass anschließend der Speer die Münze am Boden der Wanne trifft.
Bei manchen SuS weckt das den Ehrgeiz derart, dass sie am Ende des Unterrichts in der Pause noch weiter versuchen, die Münze zu treffen.
https://kmz-rt.taskcards.app/#/board/3ed0c19f-43f8-4021-b4e6-ce185934411c/view
#FediLZ #BlueLZ #PhysikEdu #MintEudu #Physik #iteachphysics
Eine tolle Veranschaulichung der Brechung von Licht mit Hilfe eines Autos, das einen Streifen Schotter zwischen zwei Asphaltbändern überquert.
Im Schotter fährt das Auto langsamer als auf Asphalt, dies führt zu einer Richtungsänderung beim Überqueren der Grenzfläche