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#eclipse

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waynerad@diasp.org
Wayne Radinsky

In 1973, there was a total solar eclipse that lasted 74 minutes. Well, sort of -- it was done with a clever trick. Viewed from any spot on Earth, the eclipse lasted a little over 7 minutes, but viewed from a supersonic aircraft flying in the direction of the eclipse, the duration could be stretched out.

The aircraft was a modified Concorde, and it wasn't quite able to keep up with the speed the moon's shadow moved over the face of the Earth. So it couldn't stretch out the length of the eclipse indefinitely. But it was able to stretch it out quite a lot.

This got me curious how fast the moon's shadow moves. For the eclipse we just had, I measured the distance from where it first lands on the North American continent, just south of Mazatlan, Mexico, to where it leaves the North American continent, near Rivière-au-Portage, New Brunswick, Canada, as 4,530 km (metric system!), or 2,815 miles. The time it takes to cross that distance is 1 hour, 27 minutes, 33 seconds. Doing the arithmetic that results in a speed of 3,105 km per hour, or 1,929 miles per hour. Translating that into a mach number we get mach 2.51. The Concorde's maximum speed was mach 2.04. The SR-71 has a maximum speed of mach 3.2, so an SR-71 could in fact keep up with the moon's shadow.

The other question is why eclipses near the equator can last more than 7 minutes while ours are much shorter up here in North America, at around 4 and a half minutes? Apparently the answer to this question is very similar to the supersonic airplane question. The moon's shadow moves from west to east during an eclipse, and the earth itself rotates from west to east as well, in the same direction -- this is why the sun rises in the east. So, the closer you are to the equator during an eclipse, the more the rotation of the earth itself mimics the movement of the supersonic airplane and elongates the eclipse.

The longest solar eclipse ever - Primal Space

#astronomy #eclipse #supersonicaircraft

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psych@diasp.org
Michael

Happy Solar Eclipse Day 2024

The best I could get, impromptu, from SW Fla....
(It looked cleaner/crisper w/eyes & glasses) I guess this is the 'psychedelic' version.
This is the sun (eclipsed by the moon) at its peak at this location. It's not (though it looks like) a crescent moon.

Not a single barking dog, over-priced water bottle/souvenir, or cloud in the sky. Beautiful day for an eclipse.

#SolarEclipse2024 #eclipse #SolarEclipse #fenfotos

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prplcdclnw@diasp.eu
David

Eclipse has started here in NorCal

So far, the moon is just touching the edge of the sun.

Watching with homemade pinhole projector.

Max coverage here will only be about 35% at about 11:15 AM.

#eclipse

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ramnath@nerdpol.ch
ramnath

enter image description here
this coming #eclipse is special because
1...its a total eclipse
2...its at perigee(closest so biggest moon)biggest tides
3....they are exactly aligned with #ANDROMEDA red star #MIRACH
a lot of energy some extreme events ...coloured by the planets
4... #MARS #SATURN applying conjunction...conflicting, competitive energies, disturbed weather
...andromeda theme of betrayal, sacrificial victim...evential rescue by perseus on his flying horse
from #ianwood

ramnath@nerdpol.ch
ramnath

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hat said, Tantric yogis believe that special spiritual practices are exponentially more powerful during #eclipses, and that personal transformations can happen far more quickly than normal.

#Eclipse s are a great time to stay in, #meditate, and do your #inner work. In fact, they provide an especially rich opportunity to connect with spirit because the ‘veils’ are thin.
https://visionaryreadings.com/the-meaning-of-eclipses-in-vedic-astrology/

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