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Joined 1 year ago
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Cake day: July 14th, 2023

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  • dQw4w9WgXcQ@lemm.eetoScience Memes@mander.xyzLaunches
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    3 days ago

    The vessel would still have a lot of speed after escaping earth’s orbit, so the trajectory would become a large orbit around the sun. You still have to slow down by about ~30km/s (or ~100 000 km/h) to make that orbit intercept with the sun’s surface.





  • dQw4w9WgXcQ@lemm.eetoScience Memes@mander.xyzBurning Up
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    7 days ago

    In Ali Baba and the 40 Thieves, the number of thieves wasn’t really necessarily 40. The number was likely just chosen because 40 was an exaggerated number, much like when we’d say “I’ve told you a hundred million times”. So 40 as a shorthand for “a huge amount” seems fitting in celcius.









  • But how do you apply this with Lorentz’ transformation (i.e. relativistic factors)? You cannot approach the speed of light without considering relativism. It is known that p = gamma * m * v where p is momentum, gamma is the gamma factor given by sqrt(1/(1 - (v^2/c^2))), m is mass and v is velocity. If you study the gamma factor, you’ll realize that it approaches infinite as v approaches c, the speed of light. Since we are actually dealing with light here, where v = c we are breaking the equation. Momentum cannot be defined for any mass which moves at the speed of light. It’s asymptotic at that speed.

    Also note that the same goes for E = mc^2. At relativistic speeds, also this equation needs to consider the gamma factor. So those classical equations break down for light.

    The answer is that photons don’t have mass, but they have energy. There is a good explanation a bit further up in this thread on how this is possible.



  • While driving, I was using google maps on android auto when I wanted to find the nearest charging station. So I used the search function in google maps. By tapping the microphone button. IN GOOGLE MAPS. Saying clearly: “Charging station”. TO GOOGLE MAPS.

    “Ok. Playing playlist ‘Charging station’ by [some random user] in spotify”

    … Nothing.

    Apparently my girlfriend, who was at home, was using Spotify at that time. So it changed the playlist for her.

    Technology is great.