This is true about cats’ radiation but we usually mean reflectivity when describing a cat’s color. This of course means there is a light source illuminating the cat and the wavelengths observed also depend on the properties of the light source.
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Depends on their response to wavelengths at rest, including IR (for blueshift) and UV (for redshift).
Redshift doesn’t literally mean things appear red: the colors just remap, for example:
320 nm 🕶️ → 400 nm 🟪
400 nm 🟪 → 500 nm 🟩
500 nm 🟩 → 625 nm 🟧
625 nm 🟧 → 781 nm 💿 (IR, CD laser wavenength)For easy calculation, I chose an exactly 25% increase in wavelength, achievable if the cat is receding at 25 % of the speed of light.
Or vice versa for blueshift. For example, a low-pressure sodium lamp in old street lights is near-monochromatic at 589 nm (pale yellow), which will reach 678nm red at 15% redshift, while a CD infrared laser incoming at the same 0.15𝑐 speed will have the same apparent red light at 678nm but because of blueshift.
TL;DR
🏳️🌈 ↓ Blueshift
🏳️🌈 ↑ Redshift

ChaoticNeutralCzech@feddit.orgto
Science Memes@mander.xyz•take their money and arrest those responsibleEnglish
2·9 days agoSo I looked it up and the mass change is actually positive, about 1 part per billion per year. Not evaporation but adsorption.
ChaoticNeutralCzech@feddit.orgto
Science Memes@mander.xyz•take their money and arrest those responsibleEnglish
1·9 days agoDuh. Do you think they’d change the value significantly? But now it’s actually constant and changes to that piece of metal will change nothing.
ChaoticNeutralCzech@feddit.orgto
Science Memes@mander.xyz•take their money and arrest those responsibleEnglish
3·9 days agoThe pound has been defined as 0.453 592 37 kg since 1959, having relied on the slightly evaporating Parisian etalon for 60 years. You have no moral high ground.
ChaoticNeutralCzech@feddit.orgto
Science Memes@mander.xyz•take their money and arrest those responsibleEnglish
3·9 days agoThe kilogram is no longer defined as the mass of the Paris etalon. Now it’s defined so that Planck constant ℎ = 6.62607015 × 10⁻³⁴ kg m²/s, where 1 s is 9 192 631 770 oscillations of ¹³³Cs and 1 m is how long light travels in 1/299 792 458 s in vacuum.
ChaoticNeutralCzech@feddit.orgto
Science Memes@mander.xyz•take their money and arrest those responsibleEnglish
9·9 days ago500M MT
Stacking metric prefixes. That’s how big the problem is. And a (metric) ton is a million grams. 500 Eg (exagrams) to 1 Zg (zettagram). You don’t get these numbers even with data volume! (edit: yes, on a global scale)Edit: apparently “MT” is not metric megaton but metric ton. Fuck whoever abbreviates in non-standard ways. https://www.nayuki.io/page/common-mistakes-when-using-the-metric-system
ChaoticNeutralCzech@feddit.orgto
Today I Learned@lemmy.world•TIL Eva Green has the most on screen time nude clocking in at 1,739 second or about 29 minutes.English
3·10 days agoThe methodology is presumably at the source https://www.bingosites.net/nudity-in-film/ but that’s a site so dodgy it won’t load without JS. Not even the Internet Archive snapshots.
It’s a 2x2 grid of vertical 2-panel comics. Could be made clearer by dividing them with thicker lines.
Critical mass means that a chain reaction can be sustained by emissions from prior nucleus splits. When splitting an atom with external force, it is not a concern because all (1) fissile atoms around will split at once.
Den letzten Satz hast du komplett falschrum übersetzt.
Ethisches Hacken ist damit außen vor
Außen vor ≠ Ausnahme aus dem Verbot
Der Schwerpunkt ist wahrscheinlich, ausgeschlossen bedeutet Verbot oder Exklusion.
Keine Sorge, ich war letztes Jahr in Deutschland und dachte, das mit Absicht und aus Versehen das gleiche bedeutet, was zu einer peinliche Situation gelitten ist.
If you’re not authorized.
Those basically say that unauthorized access to confidential/protected data is illegal. (I’m not a lawyer but check out this article presumably by lawyers)
Really? Is this ambiguous?
Citation from German law
§ 202c Vorbereiten des Ausspähens und Abfangens von Daten
(1) Wer eine Straftat nach § 202a oder § 202b vorbereitet, indem er
-
Passwörter oder sonstige Sicherungscodes, die den Zugang zu Daten (§ 202a Abs. 2) ermöglichen, oder
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Computerprogramme, deren Zweck die Begehung einer solchen Tat ist,
herstellt, sich oder einem anderen verschafft, verkauft, einem anderen überlässt, verbreitet oder sonst zugänglich macht, wird mit Freiheitsstrafe bis zu zwei Jahren oder mit Geldstrafe bestraft.
(2) § 149 Abs. 2 und 3 gilt entsprechend.
Emphasis mine.
Edit: Lawyers’ opinion
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ChaoticNeutralCzech@feddit.orgto
Not The Onion@lemmy.world•Elon Musk threatens to make ‘historically accurate’ version of The Odyssey with GrokEnglish
3·13 days agoHire a historian to give a no-nonsense talk about the history of ideas Homer used. Believers in Greek gods and countries mentioned were definitely real. We don’t know nearly as much about them as Homer did but we know Odysseus wouldn’t encounter supernatural beings and can conjecture what these themes were inspired by.
ChaoticNeutralCzech@feddit.orgto
Comic Strips@lemmy.world•Nuclear Power is Perfectly SafeEnglish
2·13 days agoNo, the mushroom cloud does not get a pass. There is nothing inside nuclear power plants that could create it. They do use ²³⁵U but in a way too low concentration so the rate of fission is greatly limited, and the worst thing that can happen, even in obsolete reactors without inherent regulation, is overpressure and conventional explosion that releases heavy isotopes from the reactor.
ChaoticNeutralCzech@feddit.orgto
Comic Strips@lemmy.world•Nuclear Power is Perfectly SafeEnglish
2·13 days agoFukushima was spectacularly bad oversight of a private company with massive responsibility, and even that needed a tsunami to cause a problem. Regulatory agencies in most countries, especially after 2011, will never be that loose again, not to mention many areas have vanishingly low natural disaster rates. And Chernobyl cannot happen again unless someone rebuilds an obsolete, sketchy reactor design that will never get approval.
The big issues nowadays are dual use of uranium enrichment centrifuges and spent fuel disposal (it’s often not economical to recycle), which aren’t local to the plant and wouldn’t stop me from supporting a nuclear plant on the edge of my town (Czechia is free from natural disasters except relatively mild winds and flooding, both of which are easily protected against with a self-contained robust structure away from flodplains). Unfortunately people are so averse of catastrophic risk that many will refuse to fly an airplane yet willingly smoke.
By the way, there are many actual valid NIMBY points against highways, airports, datacenters, aluminium plants etc. There are air pollution and noise laws in reasonable countries for this reason.
ChaoticNeutralCzech@feddit.orgto
Comic Strips@lemmy.world•Nuclear Power is Perfectly SafeEnglish
3·14 days agoYeah, they shouldn’t be in mixed-zone areas. Like almost any other power plant.
Reminder that including disasters and uranium mining, nuclear power is still the least deadly
ChaoticNeutralCzech@feddit.orgto
memes@lemmy.world•Virgin Markdown, HTML vs chad plain TextEnglish
2·14 days agoIt does format text in the editor pane by default now but uses a big warning with a button to disable it.
However, the built-in code highlighter, much like in many Lemmy frontends, highlights some words/symbols depending on the default language. Therefore, it's best to not use 4 spaces at the start of each line for a code block.Instead, this one starts with "```text" and ends with "```". No extra indents and I get to specify the highlighting language!Edit: Damn




Non-deterministic, heavily corporation-influenced software issuing root shell commands in a scenario easily foreseen by attackers who can just make spam pages to poison training data? I’ll have two!