1kg of gold displaces 51.75 cm3 of water.
1kg of lead displaces 88.18 cm3 of water.
Fresh water: 1000 g/litre
Salt water: 1025 g/litre
In fresh water:
1kg gold = (1000g negative buoyancy - 52g water displacement) = 9948g negative buoyancy
1kg lead = (1000g negative buoyancy - 88g water displacement) = 9912g negative buoyancy
In salt water:
1kg gold = (1000g negative buoyancy - 53g water displacement) = 9947g negative buoyancy
1kg lead = (1000g negative buoyancy - 90g water displacement) = 9910g negative buoyancy
As a scuba-diving weight, gold is less than 1% more efficient (by weight) than lead.
It's counter-intuitive: gold is nearly twice as dense as lead, but the importance in scuba diving is the weight of the, er, "weight", vs the weight of the water it displaces (Archimedes principle).
Gold weights per kilo are a tiny amount more efficient than lead per kilo, but much smaller and much sparklier. Anyone who wants to donate me a gold weight-belt, please be assured I would display it to its full magnificance. Around 8kg would be fine :-)
> For example, d4vd is a famous musician, and search stats may indicate his potential popularity and future record sales.
I wasn't really aware of that as I guess I am not the target demography. However, I can think of multiple ways of making money off this information, I still don't see why people are so sure it is worthless
That's the land allocation rather than the building-size / data-centre size.
The average data centre is 10,000 square metres (2.5 acres).
As well as compute and network facilities, DCs also need to accommodate parking, personnel areas, cooling, fire-suppression, power substations, power redundancy (generators), ground-security…
244 acres is absolutely at the upper end of any DC site.
Most hyperscalers now prefer to build larger sites as “campuses” which may consist of many buildings each consuming 40-100MW, and then yes each building needs most of what you mentioned, so it adds up.
A few sites are now also contemplating BTM or ‘behind the meter’ power generation which takes additional space.
Then some sites like Microsoft’s Fairwater design are optimized for a very large number of Accelerator cabinets — think GPU, TPU, etc. Those cabinets are each consuming 140kW today and with a path to 700-1000kW cabinets soon, so that’s one super dense building instead of a campus of less dense buildings filled with Compute.
> Utah’s 40,000 acre datacenter proves it’s not absolutely at the upper end
So far it seems to be more of a concept of a plan. I wouldn’t be surprised if they build smaller scale data centers first, then cancel the 40000 acres expansion. That sorts of feel like a marketing tactic. If not and they are serious, are we close to peak bubble?
Amazon is probably deploying in the range of 250,000 racks per year into AWS. That’s millions of square feet before you get into all the infrastructure around them so they’re powered, cooled and operated the way they need.
Figure on ~10 million square feet of conditioned DC space per year, approximately 5-10GW of additional power consumption to power those 250k cabinets (depending on the exact mixture of what’s in the racks — Compute, Storage, Network, Accelerators), and that’s just for one hyperscaler.
There are at least 5-7 companies in the hyperscaler weight class although likely none individually meaningfully larger than AWS, they’re the 800lb bear and everyone else is in the 500-750lb range.
It’s a lot. Datacenters also take long enough to build that a hyperscaler is pouring concrete today for shells they expect to serve real workloads in 2029 - 2031. What you’re seeing come online today in response to customer demand really started being built in 2021 - 2023.
10,000 square meters sound suspiciously small for a datacenter, even more so if you have to account for supporting facility? Maybe a small one? it's just 100m by 100m, which is smaller than most Walmart Supercenter.
Building on grade is much cheaper. There is in general plenty of surface area on Planet Earth.
Datacenters aren’t built next to Nordstrom. Theres just no reason to spend on engineering and construction that increases density like underground parking.
Galvanic corrosion typically happens at 0.5V (and as low as 0.15V in salt-water); 1.7V is "ultra high potential" in comparison with normal corrosion thresholds.
The cursor icon is useful as an indicator of function - e.g. the "I" styled character over text (where you can select/highlight then copy), and the "hand" icon to indicate a link.
Being able to change the cursor to indicate a behaviour can be beneficial, especially with dynamic DOM elements.
Going rogue with mouse cursor icons is a UX minefield though, and it's usually done without any UX assessment of the impact.
Ah, yes. I'm sorry. I think i was not precise enough.
This is certainly a wanted feature. I meant the ability for a website to change the cursor on its behalf, regardless of elements used or objects on the site.
Context sensitive behavior on elements is something that should not be affected with said option.
> "Docker images (even slimmed down) have an OS (most likely a Linux distribution)"
Not necessarily. Docker images can be based from the "scratch" container, and may contain only a single binary. With static compilation, the libraries can be included in the binary.
The O/S is provided by the container-host (which is usually a linux VM).
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