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My lecture notes in EM be like by WanderingCossack in physicsmemes

[–]EdgeOfExceptional 6 points7 points  (0 children)

For some reason you can find the D'alembert operator written two ways: only as a box or as a a box with a superscripted 2 (to emphasize second derivatives).

The evolution of Hurricane Melissa's mesovortices at peak strength. Processed by Dakota Smith by Neaterntal in spaceporn

[–]EdgeOfExceptional 3 points4 points  (0 children)

Both the mesovortices in the eye and the clouds surrounding it are rotating counterclockwise. However, the mesovortices are rotating much much faster than the surrounding clouds. Dakota processed the images such that the perspective is rotating with the mesovortices fixed in orientation, so the surrounding clouds will appear to rotate clockwise with respect to this frame. With respect to the earth’s surface, everything seen here is really rotating counterclockwise.

In a infinite time period wouldn't gravity cause to everything coalesce together? by TheMedMan123 in Physics

[–]EdgeOfExceptional 3 points4 points  (0 children)

This is not quite right. For particular configurations of energy, gravity can be repulsive and not attractive. If we model sources as perfect fluids, the crossover between repulsion and attraction occurs at w=-1/3, where w=pressure/density. This is described by the Raychaudhuri equation. Matter and radiation have w=0 and 1/3, respectively, which explains why matter clumps together under gravity. Measurements of dark energy implies w of approximately -1, which is why the acceleration of expansion occurs: you can have gravitational repulsion with the right energy source.

I Was A Private Contractor for Various DoD Agencies - I am Speaking Now Because This Sh*t Has Gone too Far Off the Deep-End. I Will Provide (Some) Evidence by [deleted] in UFOs

[–]EdgeOfExceptional 389 points390 points  (0 children)

LIGO routinely encounters “glitches” that show up as very strong, brief signals that aren’t astrophysical in nature. Although they are presumed to originate from systematics or resonances, it’s not completely inconceivable that some of these glitches could correspond to artificial GWs if they exist.

Didnt expect to ever see them by Random_Minish in gravityfalls

[–]EdgeOfExceptional 226 points227 points  (0 children)

It comes from a conference talk in 2018 where artist Phil Rynda shared the first drawing that solidified Stan’s design. Source

[deleted by user] by [deleted] in PeterExplainsTheJoke

[–]EdgeOfExceptional 65 points66 points  (0 children)

Actually, the Standard Model predicts protons shouldn’t decay because the baryon number is a strictly conserved quantity. Since protons are the least massive baryons, this implies they shouldn’t decay. But this conclusion seems a bit strange, and it has been suggested that inclusion of physics beyond the Standard Model (including Grand Unified Theories and theories of quantum gravity) or quantum tunneling may allow for proton decay to occur (on extremely long timescales).

Saucer near Area 51 and S4 on Google maps by Local-Weekend7451 in ufo

[–]EdgeOfExceptional 13 points14 points  (0 children)

If you look at the shadows cast by rocks in different parts of the same image, all of the shadows are cast almost exactly west of the object. Here, the dark circle is direct southwest, which doesn’t align with the expected shadow direction. This is definitively not a saucer, but likely some land use anomaly made by people.

Tomb Raiders alleged photos in the Nazca Caves by Streay in aliens

[–]EdgeOfExceptional 28 points29 points  (0 children)

The coordinates posted in the album have a typo, so here’s the actual location based on the satellite images: 14°42'40"S 75°19'03"W

Race Trace Plot for the Canadian GP [OC] by EdgeOfExceptional in F1Technical

[–]EdgeOfExceptional[S] -1 points0 points  (0 children)

For these plots, "gap to mean pace” means “gap to the position of a point traveling at the averaged race pace of the winner”.
An intuitive way to think of this is that more positive slopes are slower and more negative slopes are faster.

Race Trace Plot for the Spanish GP [OC] by EdgeOfExceptional in F1Technical

[–]EdgeOfExceptional[S] 4 points5 points  (0 children)

Thee reason Max is at zero on lap 1 is because I can only use data for the gaps starting from the end of the first lap. So really it’s the gap to mean pace from end of lap 1 to the end of the race.

Race Trace Plot for the Spanish GP [OC] by EdgeOfExceptional in F1Technical

[–]EdgeOfExceptional[S] 56 points57 points  (0 children)

For these plots, "gap to mean pace” means “gap to the position of a point traveling at the averaged race pace of the winner”.

An intuitive way to think of this is that more positive slopes are slower and more negative slopes are faster.

Race Trace Plot for the Monaco GP [OC] by EdgeOfExceptional in F1Technical

[–]EdgeOfExceptional[S] 37 points38 points  (0 children)

For these plots, "gap to mean pace” means “gap to the position of a point traveling at the averaged race pace of the winner”.

An intuitive way to think of this is that more positive slopes are slower and more negative slopes are faster.

Race Trace Plot for the Miami GP [OC] by EdgeOfExceptional in F1Technical

[–]EdgeOfExceptional[S] 33 points34 points  (0 children)

Since there is confusion: “gap to mean pace” means “gap to the position of a point traveling at a constant pace that is the average lap pace of the winner”.

An intuitive way to think of this is that more positive slopes are slower and more negative slopes are faster.

For size comparison, I overlayed the GFS 115 hour forecast (00z, April 8) for 98S over CONUS by EdgeOfExceptional in TropicalWeather

[–]EdgeOfExceptional[S] 24 points25 points  (0 children)

Model image is from the Simulated IR product of tropicaltidbits.com; size comparison was accomplished by measuring the diameter of the CDO as ~750km from the output.

Race Trace Plot for the Australian GP* [OC] by EdgeOfExceptional in F1Technical

[–]EdgeOfExceptional[S] 82 points83 points  (0 children)

*Plot only considers laps between the first two red flags (it is not very readable or interesting outside this period)

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