Blackbeard_

7 ms·

1.
by Blackbeard_ 8y ago
Yeah, right on. To put some numbers behind that it seems only ~1% of London's buses are electric whereas about a third are hybrid. http://content.tfl.gov.uk/bus-fleet-audit-31-march-2018.pdf
2.
by Blackbeard_ 8y ago
They do try to mitigate this criticism in the first line of the article: "Light-by-light scattering is a very rare phenomenon in which two photons – particles of light – interact, producing again a pair of photons." This is the pr
3.
Future of particle physics: “In it for the long haul”(cerncourier.com)
2 points by Blackbeard_ 8y ago|0 comments
4.
by Blackbeard_ 8y ago
RE: Football Monopolies can have negative effects without trying to extract monopoly rents. The competition between BT and Sky massively increased the TV rights price for e.g. the premier league , so the clubs got much more money. In theory
5.
by Blackbeard_ 8y ago
I don’t understand this comment... It’s true that the first event occurred after only two days but ligo have 11 events over two running periods at this point. https://en.m.wikipedia.org/wiki/List_of_gravitational_wave_o
6.
by Blackbeard_ 8y ago
Having a country-wide 1% must pull it down in some cases. For instance in the UK if you bought the $4.1m London home on a 25 year, 3% mortgage, with a 25% deposit you'd pay about $170k per year. But after tax your $290k "top-1%&qu
7.
by Blackbeard_ 8y ago
That would be more than a 5 sigma difference which would definitely be significant but that number you're quoting for normal hydrogren is the 1S-2S line. This measurement is the 1S-2P line which has an average frequency of ~2,466,051.6
8.
by Blackbeard_ 8y ago
Yeah that's right, the red shift is just one contribution to the total uncertainty. They're all listed in table I and the 4.2 * 10^-15 just comes from adding them in quadrature.
9.
by Blackbeard_ 8y ago
https://arxiv.org/abs/1710.07663 Those interested in a (somewhat) accessible view of where particle physics is at in a big sense could read this article from the head of our theory group at CERN.
10.
by Blackbeard_ 8y ago
The article is just discussing a type of data analysis. The machine runs the same way regardless.
11.
by Blackbeard_ 8y ago
The gist is that you would roughly look for deviations from theory on one (probably small) dataset, you'd identify any regions of interest and then run a proper analysis of that region on a different dataset to see if the effect is rea