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Awesome video -- pretty low on fluff compared to how bad YT can get these days, which is a pleasant surprise. I totally understand the physics and reality of s

Awesome video -- pretty low on fluff compared to how bad YT can get these days, which is a pleasant surprise. I totally understand the physics and reality of sound/light/etc. traveling different speeds in different mediums, but it's always such a wild thought to me. It tickles my brain in such a delightful way.

permo-w 4y ago
given that (in physics) sound is vibration, I think a clearer way of phrasing it is that glass cracks at the speed at which a vibration can travel through it. glass is much denser than air, so the particles can knock into each other more easily, meaning that the speed of sound (or vibration) in glass is a lot faster (this isn’t aimed at explaining it to you, just to write out my thoughts, as I found their explanation a little odd)
- cwillu 4y ago
  They made it to that explanation in the video eventually.
  - permo-w 4y ago
    fair enough. I didn’t quite make it to the end
version_five 4y ago
For anyone who doesn't want to watch an 8 minute video, the glass / bullet race is at 2:40. Maybe it's low fluff relative to other YouTube videos, for me it could have been a 5 second GIF without any real loss.
- photoGrant 4y ago
  Some want education. Some want entertainment. Some want some wrapped in some. Sometimes.
  - into_infinity 4y ago
    This is less about "customer demand" and more about having to meet minimum video length for mid-clip monetization slots. Strictly an artifact of how YouTube works.
    - photoGrant 4y ago
      I didn't know, I pay the Premium to hide that stuff. Regardless, given the effort and lengths they went to, I'm happy to see them do so in a manner that funds their ability to do more.
      - WhackyIdeas 4y ago
        YouTube know what they are doing… irritate the hell out of you until you buy Premium. I once had YouTube on in the background and an advert which was an hour long popped up - but I was focused on something else and away from the screen and the tv remote. The advert? A video of someone pointing a camera outside of a window during the night and onto a dark street (no sounds other than rustling from the person holding the camera). An hour long of it. Skip. It was soon after this I paid up.
        RobotCaleb 4y ago
        You ... rewarded this behavior instead of installing ublock origin and never seeing another YouTube ad?
  - wruza 4y ago
    I’ve seen some doing 10 second previews of action parts and then proceed to setup and education. Too bad platforms encourage them to make you watch a couple of minutes of things that you may not be interested in at the time.
- yunohn 4y ago
  It’s interesting that people complain about vapid reels/TikTok, while also hating on medium-length educational content.

permo-w 4y ago

given that (in physics) sound is vibration, I think a clearer way of phrasing it is that glass cracks at the speed at which a vibration can travel through it. glass is much denser than air, so the particles can knock into each other more easily, meaning that the speed of sound (or vibration) in glass is a lot faster (this isn’t aimed at explaining it to you, just to write out my thoughts, as I found their explanation a little odd)

cwillu 4y ago
They made it to that explanation in the video eventually.
- permo-w 4y ago
  fair enough. I didn’t quite make it to the end

version_five 4y ago

For anyone who doesn't want to watch an 8 minute video, the glass / bullet race is at 2:40. Maybe it's low fluff relative to other YouTube videos, for me it could have been a 5 second GIF without any real loss.

photoGrant 4y ago
Some want education. Some want entertainment. Some want some wrapped in some. Sometimes.
- into_infinity 4y ago
  This is less about "customer demand" and more about having to meet minimum video length for mid-clip monetization slots. Strictly an artifact of how YouTube works.
  - photoGrant 4y ago
    I didn't know, I pay the Premium to hide that stuff. Regardless, given the effort and lengths they went to, I'm happy to see them do so in a manner that funds their ability to do more.
    - WhackyIdeas 4y ago
      YouTube know what they are doing… irritate the hell out of you until you buy Premium. I once had YouTube on in the background and an advert which was an hour long popped up - but I was focused on something else and away from the screen and the tv remote. The advert? A video of someone pointing a camera outside of a window during the night and onto a dark street (no sounds other than rustling from the person holding the camera). An hour long of it. Skip. It was soon after this I paid up.
      - RobotCaleb 4y ago
        You ... rewarded this behavior instead of installing ublock origin and never seeing another YouTube ad?
- wruza 4y ago
  I’ve seen some doing 10 second previews of action parts and then proceed to setup and education. Too bad platforms encourage them to make you watch a couple of minutes of things that you may not be interested in at the time.
yunohn 4y ago
It’s interesting that people complain about vapid reels/TikTok, while also hating on medium-length educational content.