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Record-breaking neutrino is most energetic ever detected

nature.com

11–20 of 137 posts

Re: Record-breaking neutrino is most energetic ever detected

#11

For context, 120 PeV is about 10% the kinetic energy of a ping pong ball during typical play.

Right, and it is this amount of energy in a single particle . A ping-pong ball is comprised of who-knows-how-many billions of particles, so the energy of any one particle is a fraction of the whole.

A ping pong ball would be roughly 2 trillion trillion atoms, for reference

Re: Record-breaking neutrino is most energetic ever detected

#12
post #8

For context, 120 PeV is about 10% the kinetic energy of a ping pong ball during typical play.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

It must have been a very short amount of time. 2 HP is 1,500 watts, probably more light than all lightbulbs in my house combined.

Re: Record-breaking neutrino is most energetic ever detected

#13
post #8

For context, 120 PeV is about 10% the kinetic energy of a ping pong ball during typical play.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

Particle on steroids.

Re: Record-breaking neutrino is most energetic ever detected

#14
post #8

For context, 120 PeV is about 10% the kinetic energy of a ping pong ball during typical play.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

Fun fact, a typical horse exerts about 1 horse power of usable work while performing. That's so weird, I'm sure almost no one would've been able to guess that - but it's true.

(To be clear, that's sustained effort over time, not just momentary. Athletically trained humans can do about 1 HP of peak momentary effort, and around 0.3 HP if sustained over time.)

Re: Record-breaking neutrino is most energetic ever detected

#15
post #8

Earlier quoted context omitted.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

> typical body builder expends about 1 horse power while performing Close, but ackshually... Bodybuilders just oil up and pose in beauty pageants. 1 horsepower is basically one 250-pound bench press in one second. (550 foot pounds of work; the aforementioned bench press assumes a 2.2-foot stroke length.) Most bodybuilders and serious weight lifters can do that, but they can't keep it up for long.

Neither could this neutrino.

Re: Record-breaking neutrino is most energetic ever detected

#16
post #8

Earlier quoted context omitted.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

It must have been a very short amount of time. 2 HP is 1,500 watts, probably more light than all lightbulbs in my house combined.

1500 watts is about what an electric kettle uses.

Re: Record-breaking neutrino is most energetic ever detected

#17
post #8

Earlier quoted context omitted.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

> typical body builder expends about 1 horse power while performing Close, but ackshually... Bodybuilders just oil up and pose in beauty pageants. 1 horsepower is basically one 250-pound bench press in one second. (550 foot pounds of work; the aforementioned bench press assumes a 2.2-foot stroke length.) Most bodybuilders and serious weight lifters can do that, but they can't keep it up for long.

Ha, that made me laugh, thanks for the correction!

Re: Record-breaking neutrino is most energetic ever detected

#18

The article references the "Oh-My-God particle, the most energetic particle yet encountered. Here's the late John Walker's excellent piece on that: https://fourmilab.ch/documents/OhMyGodParticle/

> These calculations involve some elementary but easy to mess up algebra and some very demanding numerical calculations for which regular IEEE double precision is insufficient. If you'd like to double-check these results, be sure to use a multiple precision calculator with at least 30 significant digits of accuracy.

So you're saying my iPhone built-in calculator app is going to have problems....?

Time to whip out dc on the terminal.

Re: Record-breaking neutrino is most energetic ever detected

#19
post #8

Earlier quoted context omitted.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

It must have been a very short amount of time. 2 HP is 1,500 watts, probably more light than all lightbulbs in my house combined.

The muon traverses a few hundred meters of detection volume very close to the speed of light, so in the order of one microsecond.

Re: Record-breaking neutrino is most energetic ever detected

#20
post #8

Earlier quoted context omitted.

One of the lead researchers in KM3NeT mentioned that the particle was emitting 2 horse power in light during detector transit. A typical body builder expends about 1 horse power while performing, so its 2 body builders in a single particle.

Fun fact, a typical horse exerts about 1 horse power of usable work while performing. That's so weird, I'm sure almost no one would've been able to guess that - but it's true. (To be clear, that's sustained effort over time, not just momentary. Athletically trained humans can do about 1 HP of peak momentary effort, and around 0.3 HP if sustained over time.)

And a horse can do quite a bit more in peak as well— 1 HP is definitely meant to be the long term continuous output of a typical horse under load, especially a consistent load such as turning a millstone.
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