Jim Donegan ✅ · @jimdonegan
1557 followers · 4676 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1553 followers · 4634 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1516 followers · 4447 posts · Server mastodon.scot
Les capsules du prof Lutz · @lutzray
253 followers · 4233 posts · Server mamot.fr

@Snoro In , "real-time" means _nothing_, , zilch, nada, rien pentoutt... even less in 🤓

#specialrelativity #generalrelativity #fuckingphysicists

Last updated 1 year ago

Mr Tibbles · @mrtibbles
6 followers · 61 posts · Server mindly.social

TFW you age less than the people around you (since they are in an inertial reference frame)

#justspeedsterthings #hashitout #HashtagGames #specialrelativity

Last updated 1 year ago

Jim Donegan ✅ · @jimdonegan
1496 followers · 4371 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1497 followers · 4338 posts · Server mastodon.scot
Nick · @internic
57 followers · 998 posts · Server qoto.org

@mokazemi Interestingly, measuring intervals in works something like this in the special theory of relativity, where the "proper time" between two events separated in space by dx and in time by dt is dT^2 = dt^2 - (dx/c)^2. When dx=c*dt, dT=0.

Physically dT represents the time experienced by someone traveling between the two events at a constant velocity (when it's not negative). When the velocity approaches the speed of light, time dilation makes the elapsed proper time approach zero.

#spacetime #relativity #specialrelativity

Last updated 2 years ago

Jim Donegan ✅ · @jimdonegan
1480 followers · 4255 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1479 followers · 4229 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1457 followers · 4266 posts · Server mastodon.scot
Boud · @boud
319 followers · 1840 posts · Server framapiaf.org

Dear followers, many of you seem to be interested in astronomy, and hopefully cosmology :). To be part of a live audience for recording the first of a series of lectures on + steps towards , starting prob 10 March, then either add your user id to the talk page [1] or reply to this thread so that I can @ you with updates. Real learning would require a lot more than just listening; see [2].

[1] en.wikiversity.org/wiki/Talk:S

[2] en.wikiversity.org/wiki/Specia

#wikiversity #generalrelativity #specialrelativity

Last updated 2 years ago

Jim Donegan ✅ · @jimdonegan
1428 followers · 4010 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1418 followers · 3947 posts · Server mastodon.scot

It took 00:09:52 for me to get the speed of light down to my walking speed. Holy colors, Einstein! gamelab.mit.edu/slower

#SlowLight #mitgamelab #gamedev #GameDesign #educational #edugame #relativity #specialrelativity #physics

Last updated 2 years ago

Jim Donegan ✅ · @jimdonegan
1321 followers · 3190 posts · Server mastodon.scot

Spacetime is a four-dimensional topological manifold with a smooth atlas carrying a torsion-free connection compatible with a Lorentzian metric and a time orientation satisfying the Einstein field equations (EFE).
\[\underbrace{(\mathcal{M},\mathcal{O},\mathcal{A},\nabla,\text{g},\mathcal{T})}_{\text{Relativistic spacetime}}\]

#Lorentz #einstein #theoreticalphysics #manifold #differentialgeometry #specialrelativity #generalrelativity #relativity #physics #time #space #spacetime

Last updated 2 years ago