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astrosi

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Agreed, one of my great pleasures during COVID when I had terrible insomnia and couldn't sleep was to cycle down to Billingsgate in the morning and eat one of the fantastic bacon and scallop rolls from the cafe in the market. Definitely going to miss the place.

Unlikely, dead dark stars being dark matter candidates is a theory known as MACHOs (massive compact halo objects)

If they exist we would expect to detect them as they pass between another star and earth creating a gravitational lens. You can estimate the number of these MACHOs by looking at a bunch of stars for a long period of time and counting the number of microlensing events you see.

A team did this in 2000 and found that while there were some events, there weren't enough to explain all of the dark matter around the Milky Way. https://arxiv.org/abs/astro-ph/0001272

GitHub Incident 4 years ago

In many cases the status page of a service is an unreliable indicator (e.g. AWS's) so I find HN / Twitter to be a much better signal that an incident that affects many people is happening.

Cosmos | Software Engineer | Remote (UK Timezone) | https://cosmos.homerun.co/ At Cosmos (https://cosmos.video), we are recreating the experience of working in an office for remote teams. Cosmos is a virtual HQ platform where remote companies can run an online office which combines a multiplayer game and video chat. We believe offices are great, but you don’t need to commute to a real world office to work together.

Everyone at Cosmos has a huge influence on how the product is built and where it is headed. We also get to interact closely with our users to figure out the best product and technical solution for the problem at hand.

Stack: Python3, Typescript, Postgres, AWS

We are hiring for: Full Stack, Backend and Frontend Engineers.

Link to our Jobs page: https://cosmos.homerun.co/

UK visa sponsorship available for the right candidate

Backed $2.5m by LocalGlobe, Entrepreneur First, Tiny VC and many great

If that sounds interesting please feel free to email me: simon [at] cosmos.video

Cosmos | Software Engineer | Remote (UK Timezone) | https://cosmos.homerun.co/

At Cosmos (https://cosmos.video), we are recreating the experience of working in an office for remote teams. Cosmos is a virtual HQ platform where remote companies can run an online office which combines a multiplayer game and video chat. We believe offices are great, but you don’t need to commute to a real world office to work together.

Everyone at Cosmos has a huge influence on how the product is built and where it is headed. We also get to interact closely with our users to figure out the best product and technical solution for the problem at hand.

Stack: Python3, Typescript, Postgres, AWS

We are hiring for: Full Stack, Backend and Frontend Engineers.

Link to our Jobs page: https://cosmos.homerun.co/

UK visa sponsorship available for the right candidate

Backed $2.5m by LocalGlobe, Entrepreneur First, Tiny VC and many great

If that sounds interesting please feel free to email me: simon [at] cosmos.video

In the early days I knew Uber drivers who use to be cab drivers who claimed they made a ton more money than with their cab company. I doubt that's as true anymore

As (one piece of anecdotal) evidence, I was talking with a guy that drives for both Uber and a local cab company. The cab company pays more, but he still prefers driving for Uber as he is put in far fewer sketchy situations by them.

Impressive stuff, I especially like the style transfer that can be done by using the global features of one image and the local features of another (Fig. 7)

What I find somewhat annoying is that whilst they show some examples from their validation set, and a couple of examples of the model failures. They don't appear to show a random selection of cases from their validation set.

In a very real way it was. There were two completely geographically separate instruments which recorded the same signal with a delay that is consistent with the light travel time between them.

In the future this will get better when VIRGO in Italy and KAGRA [2] in Japan come online. Then we will have 4 independent detectors which will be able to verify that same signal is observed at the same time.

Obviously of course given the transient nature of what is being observed once the merger has occurred it will very rapidly stop producing gravitational waves so we will not be able to measure the same event again.

[1] https://en.wikipedia.org/wiki/Virgo_interferometer

[2] https://en.wikipedia.org/wiki/KAGRA

Part of the reason for that is that LIGO isn't exactly a Michaelson interferometer in that it has an extra pair of mirrors in each arm. If you look at this schematic [1] then in a traditional Michaelson interferometer you would only have the mirrors that are at the end of both arms.

With LIGO there is an extra set of mirrors within the arms this allows the light from the laser to bounce between them ~100 times or so increasing the effective path length greatly.

[1] https://www.nsf.gov/news/speeches/colwell/rc03_ligo/img009.j...

I assume that it is because QuickTime is using your GPU to decode the h.264 but VLC isn't.

There is support for hardware accelerated h.264 decoding in VLC; you just need to enable it. I think the option is in Input and Codecs tab in the preferences.

Whilst that is true, it really all depends on the resistance of the thing that you are passing the current through.

Remember that P = I^2 R (i.e. power goes as the square of the current for a constant resistance)

so for an object of constant resistance then to double the current than you need 4 times the power.