41–50 of 155 posts
Earlier quoted context omitted.
If you were emperor of the world, I would implore you to finance a multibillion dollar project to measure the gravitational constant to higher percision so that we could move to units that actually make sense. https://en.wikipedia.org/wiki/Planck_units
Shpx, gung'f n shpxvat terng vqrn.
laughs in imperial units
Physicists finally moving from SVN to Git.
For the next revision: remove the mole from the SI. It's completely pointless. A number is not a unit! Instead replace it by the bit, the fundamental unit of information.
This article sounds like it got written by a scientist but got butchered through a PR department. It talks about the "Mass of a photon" and weighing them directly, rather than the energy-equivalent mass, which is presumably what they are intending to talk about?
As the article correctly states, photons have a finite mass that could in principle be measured by putting an optical cavity on a scale.
Earlier quoted context omitted.
How about we keep the current name and use it as a basis for prefixing? gram -> millikilogram milligram -> microkilogram metric ton -> kilokilogram ...never mind.
It's almost a crime that a metric ton isn't called a "megagram". Aside, are the mega and giga prefixes ever used for anything except bits and bytes? (Edit: OK, OK. I forgot about megaohms, megahertz, megawatts. Also megapixels and Megadeth.)
Laughed at that one.
Earlier quoted context omitted.
As the article correctly states, photons have a finite mass that could in principle be measured by putting an optical cavity on a scale.
I know that zero is a finite number, but since the photon is a massless particle, wouldn't it be impossible to get a kilogram worth of photons bouncing around in an optical cavity?
Photons indeed have no rest mass, but it’s impossible to ever find a photon at rest unless you yourself have no rest mass, in which case you also have no ability to do experiments.
For the next revision: remove the mole from the SI. It's completely pointless. A number is not a unit! Instead replace it by the bit, the fundamental unit of information.
Earlier quoted context omitted.
As the article correctly states, photons have a finite mass that could in principle be measured by putting an optical cavity on a scale.
I know that zero is a finite number, but since the photon is a massless particle, wouldn't it be impossible to get a kilogram worth of photons bouncing around in an optical cavity?