maccam94

21 ms·

181.
by maccam94 6y ago
The recipe for Roman concrete was recorded, but most places didn't have access to the materials and conditions necessary to produce it: https://www.sciencemag.org/news/2017/07/why-modern-mortar-cr...
182.
by maccam94 6y ago
I thought the main reasons were cost and maintainability? Both of which should be improved with the ability to launch larger, heavier, and more numerous payloads.
183.
by maccam94 6y ago
Initial versions of Starlink would reflect so much light that they would overwhelm significant areas of the sensors. If the reflection issue is resolved with the new sun shades, then the satellite trails can be removed during post-processin
184.
by maccam94 6y ago
Nuclear thermal rockets are much more interesting IMO because they were actually viable and in development until Nixon killed them for no good reason. They're coming back now though. https://en.wikipedia.org/wiki/N
185.
by maccam94 6y ago
Cambridge Fusion Systems[1] is a private company spun out of MIT that is building a proof-of-concept reactor based on these new magnets within the next 5 years. Breakthrough in Nuclear Fusion? - Prof. Dennis Whyte (2016) - https:/&#x2
186.
by maccam94 6y ago
You don't need AI, just use stronger magnets[1]. ITER was conceived before high temperature superconducting magnets were discovered, so it has more trouble maintaining plasma stability. 1: https://www.youtube.com/watch?
187.
by maccam94 6y ago
IIRC, when ITER was conceived, it wasn't a waste of money. They just chose a conservative development path that was expensive but very likely achievable. Technology and theories have since advanced that might leapfrog it, but the proje
188.
by maccam94 6y ago
I believe for performance and error correction features for spinning hard drives. Check out the tables and graphic in the overview section here[1]. Any write to a sector requires updating the checksum, which means the whole sector has to be
189.
by maccam94 6y ago
I believe they meant that audio captchas have become inaccessible to humans in general. Bots have gotten so good at audio captchas that the difficulty level has to be high enough that humans are also unable to complete them.
190.
by maccam94 6y ago
But technically you could try a dictionary-based brute-force attack on a user with a weak password and crack it regardless of the hashing scheme.
191.
by maccam94 6y ago
Encrypted implies that the passwords could possibly be decrypted with a key.
192.
by maccam94 6y ago
Couldn't a blood clot cause swelling or increase pressure around an un-ruptured aneurysm, causing it to rupture?
193.
by maccam94 6y ago
There are still testing backlogs for COVID, it can take multiple days to get results (assuming the doctors decide to run the test). Link #2 also says: It’s hard to know for sure [if clotting is a major factor], because the clotting problem
194.
by maccam94 6y ago
I've seen multiple reports of severe blood clotting and strokes in COVID patients, including those who are otherwise asymptomatic, including people under 50.[1] Given that there is a pandemic going around with similar symptoms, I don&#
195.
by maccam94 6y ago
I would not be surprised if he is diagnosed with COVID-19, it can cause blood clots that obstruct blood flow. "Severe brain haemorrhage and concomitant COVID-19 Infection: A neurovascular complication of COVID-19": https:/&#
196.
by maccam94 6y ago
I would not be surprised if he is diagnosed with COVID-19, it can cause blood clots that obstruct blood flow. "Severe brain haemorrhage and concomitant COVID-19 Infection: A neurovascular complication of COVID-19": https:/&#
197.
by maccam94 6y ago
I am assuming that it would work with clang-compiled[1] kernels only at first. 1: https://www.kernel.org/doc/html/latest/kbuild/llvm.html
198.
by maccam94 6y ago
Some of the wind sensitivity comes from the hulls being long and narrow. SpaceX's Starship design will be much wider and thus more robust compared to their Falcon 9 rocket.
199.
by maccam94 6y ago
The Boom plans to land at 185 knots/213MPH, comparable to a 737-800. They probably need a fraction of the distance to stop though, since the plane has about 1/3 of the seating capacity.
200.
by maccam94 6y ago
It is fundamentally impossible to have secret ballots[1] in a digital system along with provable integrity. Secret ballots are necessary to prevent vote buying, intimidation, and coercion. If no one can prove which voter submitted which bal
201.
by maccam94 6y ago
Given the .moe TLD, I think it is a reference.
202.
by maccam94 6y ago
There are multiple shipping corridors through areas with less than stable/friendly governments. Sure, there are the pirates off of Somalia, but there's also governments that could threaten blockades or charge steep fares to pass b
203.
by maccam94 6y ago
Running multiple containers is faster and more efficient than multiple VMs. Running a container on the same kernel as the host is faster and more efficient than a VM. If you're trying to run an app across different OS kernels, you stil
204.
by maccam94 6y ago
Upmass is way more important right now than downmass. If you want more inspiration, know that SpaceX is making a significant profit on these flights despite their price being a small fraction of shuttle flights. And they're pouring it
205.
by maccam94 6y ago
Scooters yes, e-bikes no. The e-bikes have much bigger batteries. More energy = bigger boom. They also probably only had a fraction of chargers compared to the number of bikes, and sourcing more would probably take a lot of extra time and e
206.
by maccam94 6y ago
Oh interesting, TIL. The syntax looked similar and it's a Google project, so I assumed gn was just some BUILD file generator on top.
207.
by maccam94 6y ago
Chromium uses a build tool called bazel. //base is a bazel path, where // is the root of a workspace (which is usually a version controlled repository). Thus it is referring to https://chromium.googlesource.co
208.
by maccam94 6y ago
1. Starship - https://www.spacex.com/vehicles/starship/ Completely reusable rocket that can carry 100 tons into low Earth orbit, refuel, and then continue on to places like Mars. Launches are estimated to cost Spa
209.
by maccam94 6y ago
I looked into pulumi last week, and it seems cool but I think they need to rework their library design to avoid fracturing their ecosystem for each language (or just standardize on one language).
210.
by maccam94 6y ago
It sounds like maybe your mail server had a misconfigured reverse DNS entry? Those DNS PTR records look like ZZ.YY.XX.WW.in-addr.arpa. I'm aware that SMTP in particular has a dependency on rDNS, but I'm not sure about the details.

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