Record-breaking neutrino is most energetic ever detected

Post by thamer » Thu, Feb 13, 2025, 4:48 AM UTC

wd776g5 wrote: post #108

thamer wrote: post #103

It took a few tries, but I got Wolfram Alpha to compute its velocity compared to the speed of light[1]. I started with: sqrt(1-((1/(1+120 PeV / (neutrino mass * c^2)))^2)) but it simply said "data not available". So I changed: 120 PeV to 120e15 * 1.602176634e-19 kg m^2 s^-2 neutrino mass to 1.25e-37kg speed of light to 299792458 m/s and finally it gave a numeric result: 0.999999999999999999999999999999999999829277971…

I can see it came from your source but why is the neutrino mass specified in kg instead of g? why not 1.25e-34g?

Post by moi2388 » Thu, Feb 13, 2025, 7:15 AM UTC

idlewords wrote: post #49

mr_toad wrote: post #43

Earlier quoted context omitted.

American kettles. Kettles in hard core countries push 2300 to 2400 watts ;-)

Slow-boiled water gives superior flavor!

Post by __MatrixMan__ » Thu, Feb 13, 2025, 7:37 AM UTC

the_arun wrote: post #30

AnimalMuppet wrote: post #26

Earlier quoted context omitted.

This particle spread this energy through a volume of seawater a few km deep in the Mediterranean. It's going to raise the temperature of that volume a few billionths of a degree, if that. So, no, we can't.

What if our existing solar panels are optimized to detect these? Then will it improve the quality of solar panels to capture more energy from sunlight as well? Sorry, I'm no expert in this - asking more of a curiosity.

Post by sitharus » Thu, Feb 13, 2025, 9:27 AM UTC

Daneel_ wrote: post #81

wiredfool wrote: post #67

Earlier quoted context omitted.

Meh, Lidl sells 3200w kettles.

Where are the three phase models?? Seriously though, a 15A kettle sounds great.

Post by myrmidon » Thu, Feb 13, 2025, 9:38 AM UTC

skissane wrote: post #116

thamer wrote: post #111

Earlier quoted context omitted.

The kilogram is the base unit of mass in the International System of Units (SI): https://en.wikipedia.org/wiki/SI_base_unit Time is in seconds, length in meters, temperature in kelvin, etc. A unit of energy like a joule is then defined using these base units, so 1 joule is 1⋅kg⋅m^2⋅s^-2.

> The kilogram is the base unit of mass in the International System of Units (SI) Arguably, an ugly wart, but one we are stuck with for historical reasons. The base units of the original metric system (metre and gram) were poorly proportioned for practical use, resulting in the two main scientific/engineering systems of metric units both choosing to prefix one base unit - the centimetre-gram-second (cgs) system chose…