Little_mouse

@Little_mouse@lemmy.ca

• ⁨Comment⁩ on ⁨Prove your humanity.⁩ ⁨⁨4⁩ ⁨days⁩ ago⁩:

  The standard way to streak a plate involves creating a resevoir of the sample you are studying, then using a sterile tool to streak through that at a steep angle. Then you streak through the first streak with another sterile tool, and so on and so forth.

  As you streak through lines, the amount of bacteria pulled along is reduced until you are able to isolate individual colonies.

• ⁨Comment⁩ on ⁨Why can't a liquid move faster than the speed of sound in that medium?⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  True. You can shoot lasers and such through a lot of things, but I am trying to describe a phenomenon in relatively simple language without getting too bogged down in the technical details. The question was about flowing liquids, so I assumed it was understood that that was what I was talking about.

• ⁨Comment⁩ on ⁨Why can't a liquid move faster than the speed of sound in that medium?⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  Sound is transferred through a medium literally as a wave. When you get right down to the core of it, the wave requires movement within the medium to transmit.

  So it might help to conceptualize it not as “Liquid cannot move faster than the speed of sound in it’s medium” but more like “The speed of sound in a liquid medium is defined by the speed at which energy can propagate in that system, which includes motion.”

• ⁨Comment⁩ on ⁨Attempt to motivate people to take the stairs⁩ ⁨⁨6⁩ ⁨months⁩ ago⁩:

  They try to make a distinction when referring to kilocalories as Calories, it’s literally just that Calorie (kcal) is capitalized and calorie (cal) is not.

  It’s a dumb system.

• ⁨Comment⁩ on ⁨Terrified friends burn to death trapped in Tesla as doors won't open after crash⁩ ⁨⁨9⁩ ⁨months⁩ ago⁩:

  Depending on the manufacture date, the side windows on the model Y may be laminated glass. If that’s the case with yours, window smashers won’t work on those.