WhatsTheHoldup

@WhatsTheHoldup@lemmy.ml

• ⁨Comment⁩ on ⁨Prehistoric sex toys are kind of hard to look at⁩ ⁨⁨2⁩ ⁨days⁩ ago⁩:

  “Totally retracred or cut” means either the foreskin is cut or that it’s just pulled back.

  We don’t know if it’s cut or not, we can only speculate it looks like one.

• ⁨Comment⁩ on ⁨What else are they hiding from us?⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  If you think about a number line, multiplying 2 by -1 takes you to -2. Multiply it again by -1 and its back at 2.

  If you think of the arrow from 0 to 2, all you did was rotate that arrow by 180 degrees to point along the negative axis and back again.

  Multiplication by -1 is already a rotation of 180 degrees!

  All were doing now is extending that concept to 90 degrees by imagining a second line perpendicular to the original number line.

  Two 90 degree rotations need to get to -1 to complete the 180 degree rotation we already expect in normal multiplication.

  Giving it the symbol i, this means definitionally i * i = -1. It has to because -1 flips us around the other way on the number line.

  That means i is the square root of negative 1.

  Any values that use i to store information, even time, could be called “imaginary time”. Really it’s just constantly oscillating between the real and imaginary spaces like a constantly spinning arrow.

• ⁨Comment⁩ on ⁨What else are they hiding from us?⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  A particle is also a wave, a wave moves back and forth between -X and X passing 0 every time.

  Now, when you measure this particle and it happens to be at zero, sometimes it moves towards X afterwards and sometimes it moves towards -X.

  For the scientists however, all they can measure is that it’s at 0 and half the time it randomly goes one way or the other with 50/50 probability.

  To explain this, scientists imagine the particle has more than 0, but it has a secret momentum hidden into it telling it to deflect positively or negatively.

  Imagine a circle instead of a line. Now instead of crossing zero, you rotate around 0 and hit a Y and -Y axis with X and -X unchanged.

  That y axis that contains the hidden momentum of the particle is called “imaginary” because scientists love loaded terms that are unhelpful to understanding lol.

• ⁨Comment⁩ on ⁨shrimp colour drama⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  How would you suggest they do that. White light near equally activates our 3 cones because all spectrums of light are in it.

  White light near equally activates all 12 shrimp cones because all spectrums of light are in it.

  Which spectrum of color is left out of white light that wouldn’t light up a cone associated with it?