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The Planck units. They are natural and depend on the personal finger. Table 1: Modern values for Planck's original choice of quantities Name Dimension Expression Value (SI units) Planck length length (L) {\displaystyle l_{\text{P}}={\sqrt {\frac {\hbar G}{c^{3}}}}} 1.616255(18)×10−35 m[7] Planck mass mass (M) {\displaystyle m_{\text{P}}={\sqrt {\frac {\hbar c}{G}}}} 2.176434(24)×10−8 kg[8] Planck time time (T) {\displaystyle t_{\text{P}}={\sqrt {\frac {\hbar G}{c^{5}}}}} 5.391247(60)×10−44 s[9] Planck temperature temperature (Θ) {\displaystyle T_{\text{P}}={\sqrt {\frac {\hbar c^{5}}{Gk_{\text{B}}^{2}}}}} 1.416784(16)×1032 K[10] Best use with prefixes SI prefixes v t e Prefix Base 10 Decimal Adoption [nb 1] Name Symbol quetta Q 1030 1000000000000000000000000000000 2022 ronna R 1027 1000000000000000000000000000 2022 yotta Y 1024 1000000000000000000000000 1991 zetta Z 1021 1000000000000000000000 1991 exa E 1018 1000000000000000000 1975 peta P 1015 1000000000000000 1975 tera T 1012 1000000000000 1960 giga G 109 1000000000 1960 mega M 106 1000000 1873 kilo k 103 1000 1795 hecto h 102 100 1795 deca da 101 10 1795 100 1 — deci d 10−1 0.1 1795 centi c 10−2 0.01 1795 milli m 10−3 0.001 1795 micro μ 10−6 0.000001 1873 nano n 10−9 0.000000001 1960 pico p 10−12 0.000000000001 1960 femto f 10−15 0.000000000000001 1964 atto a 10−18 0.000000000000000001 1964 zepto z 10−21 0.000000000000000000001 1991 yocto y 10−24 0.000000000000000000000001 1991 ronto r 10−27 0.000000000000000000000000001 2022 quecto q 10−30 0.000000000000000000000000000001 2022 Notes ^ Prefixes adopted before 1960 already existed before SI. The introduction of the CGS system was in 1873. Probably have to add more of them, or change them into a simple and clear system like the superheavy chemical element naming. Summary of element naming proposals and final decisions for elements 101–112 (those covered in the TWG report)[9] Atomic number Mendeleev Systematic American Russian German Compromise 92 IUPAC 94 AmericanChemSoc 94 IUPAC 95 IUPAC 97 Present 101 eka-thulium (unnilunium) mendelevium — — mendelevium mendelevium mendelevium mendelevium mendelevium mendelevium 102 eka-ytterbium (unnilbium) nobelium joliotium — joliotium nobelium nobelium flerovium nobelium nobelium 103 eka-lutetium (unniltrium) lawrencium rutherfordium — lawrencium lawrencium lawrencium lawrencium lawrencium lawrencium 104 eka-hafnium unnilquadium rutherfordium kurchatovium — meitnerium dubnium rutherfordium dubnium rutherfordium rutherfordium 105 eka-tantalum unnilpentium hahnium nielsbohrium — kurchatovium joliotium hahnium joliotium dubnium dubnium 106 eka-tungsten unnilhexium seaborgium — — rutherfordium rutherfordium seaborgium seaborgium seaborgium seaborgium 107 eka-rhenium unnilseptium — — nielsbohrium nielsbohrium bohrium nielsbohrium nielsbohrium bohrium bohrium 108 eka-osmium unniloctium — — hassium hassium hahnium hassium hahnium hassium hassium 109 eka-iridium unnilennium — — meitnerium hahnium meitnerium meitnerium meitnerium meitnerium meitnerium 110 eka-platinum ununnilium hahnium becquerelium darmstadtium — — — — — darmstadtium 111 eka-gold unununium — — roentgenium — — — — — roentgenium 112 eka-mercury ununbium — — copernicium — — — — — copernicium You take the element number and replace the digits with their greek-o-latin equivalents and add -ium. (The double letters are merged. "-iium" → "-ium") 0 = nil, 1 = un, 2 = bi, 3 = tri, 4 = quad, 5 = pent, 6 = hex, 7 = sept, 8 = oct, 9 = enn (Notice the linguistic elegance: nil/un/bi/tri/quad/pent/hex/sept/oct/enn. L - LyngviΣτύξ, L - Lωγyck). Thus, the 145th element is un+quad+pent+ium = unquadpentium, 763th = septhextrium. The hydrogen is probably unium, oxygen = octium, water = diunium octiumide, lithium = trium, aluminium = untrium, iron = duhexium, rust = duhexium triuniumoctiumide, uranium = ennduium, plutonium = ennquadium, and so on. This way we can replace the idiotic set of zetta/yotta/ronna/quetta into plain and simple duun-, duquad-, dusept-, trinil-. Negative value like the ugly zepto/yocto/ronto/quecto can be, say, an(ti)-, like anduun-, anduquad-, andusept-, antrinil-. Say, a light year ~= 9.5*1015 m, i.e. 9.5 unpentometers. *** Thus, by merging this system of prefixes and the Planck units, we can see: Length: 1 planck ~= 1.6*10-35 m. So, 1 m ~= 6.3*1034 planck = 6.3 triquadoplanck. 1 ft ~= 1.9 triquadoplanck. 1 triquadoplanck ~= 16 cm. 1 tripentoplanck ~= 1.6 m. Thus, we can take either triquadoplanck or tripentoplanck as basic unit for daily needs and call it just "planck" (because we can't confuse it with the planck unit). Say, 1.83 m / 6 ft height is 11.5 plancks. *** But why limit ourselves to decimal? What if use duodecimals? 1 planck ~= 1.616*10-35 m. 1 m ~= 6.188*1034 planck ~= 1.81decimal*1232 planck = 1.81decimal triduplanck. 1 triduplanck ~= 55.3 cm. 1 triunplanck ~= 5.53 cm. 1 trinilplanck ~= 0.553 cm. Say, 1.83 m / 6 ft height is 33 trinilplanck (or just "planck") if use duodecimals. *** Some confusion will be caused by the "second", because we need integer seconds in a day, and 86400 looks enough perfect. 1 planck ~= 5.39125*10−44 s 1 s ~= 1.865decimal*1043 planck = 1.269decimal*1240 planck, But if split a minute into 72 seconds, or an hour into 72 minutes, the "short second" = 1.0575decimal *1240 planck, So, 1 short second ~= 1 quadnilplanck, and can be named "1 planck" for daily needs. As the astronomic "second" anyway doesn't match its physical definition, it's absolutely enough for practical use. *** The mass is quite simple. 1 planck ~= 2.176434(24)×10−8 kg 1 kg ~= 4.6*107 planck ~= 1.28*127 planck = 1.28 septoplanck. So, we can take 1 septoplanck = 781dec g as a daily "1 planck" and replace both kilogram and pound. So, the mentioned "3 half-pounds of meat" = 3 * 453.6 / 781 = 1.75 plancks of meat, or "two without quarter plancks of meat". *** Temperature. 1 planck = 1.416784(16)×1032 K 1 K ~= 7.05823894*10-33 planck ~= 7.16dec*1229 planck = 7.16 duennplanck. The ugly standards are: 0.100 °C (between ice and steam, which depend on pressure and so on) and 0..180 °F (ammonia and alcohol, which are more stable, but hardly available). So, we currently use 0.56 .. 1.0 K units = 4..7 duennplancks, Also we measure the body temperature with 0.1 K precision, so we need something between 0.7 and 7 duennplancks, distinguishing 36.6, 36.7, 36.8 but needing no such precicision outside this range. This makes the duennplanck as a daily "1 planck".
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Granted. You find a letter in the postbox. It's just 'a' there. Only 'a'. I wish there were three character cases instead of two.
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Twenteen Who is 20 and still can't legally drink and do other things.
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Granted. The graphics moderator bans you for your profile picture. I wish for a better galaxy.
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Fire Breath For Humanoids... Biologically Possible In Scifi?
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
People have a fire breathing ability without body modifications, thanks to the brain, hands, and fermentation. -
The medieval people were living in harmony with nature, starving, and thus were shorter. The "foot" is a medieval boot. Originally they were taking off a boot and using it as a ruler, later it was recommended taking an average of several of them. In the mentioned text, sixteen boots were put in a row. Then you take a rope, measure the total length and fold it twice, twice, twice, twice. The resultin 1/16 is a local foot for this village on that exact day. The yard was officially defined as the distance between some British king's nose and thumb. Three feet were matching it later. (Still can't understand, how did they put three boots to the king's nose). The same with fingers. Also the finger is actually 1/4 of hand (four fingers held together), so it's not 12 fingers in a foot, but the foot is 3 hands, which are 12 fingers. And this makes it highly arbitrary, because various roads were measured by the men of various height. Happily, we have a centimeter, which is 1/100 of 1/40 000 000 of the Parisian meridian, which we can easily measure. Or now it's a 1/100 of 1/299 792 458 of a light second, so you can just use your clock.
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Yes, that's exactly what I said. Keep the fridge off for a month, and behold the miracle of life power. This can be formulated alternatively. "The Great Filter for intelligent life in the universe is whether they can create enough devastating tool to eradicate themselves. Until they can, they are just animals." It's harder than it seems. Humans still can't. All their arsenals can just crap into the well, many millions would survive in any case.
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Herding and wood cutting can dramatically change landscape and local climate, thus change the erosion rate. So, on the Ice Age finish. Thus, the humans are a lifeform who was sleeping in hybernation thanks to natural cryonics. When the fridge got out of power, they warmed and started ruining everything around.
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Can't remember if it was here. https://en.wikipedia.org/wiki/Skeleton_tank
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Bad science in fiction Hall of Shame
kerbiloid replied to peadar1987's topic in Science & Spaceflight
Just for comparison, a good sci-fi movie. (And look, they fly on Starship!) -
Bad science in fiction Hall of Shame
kerbiloid replied to peadar1987's topic in Science & Spaceflight
The most unforgivable blunder of the movie: -
What Country are you from without saying the name of said country?
kerbiloid replied to TheLoneOne's topic in Forum Games!
Previously Romania annexed the region (called Bessarabia) from Russia. -
totm dec 2019 Russian Launch and Mission Thread
kerbiloid replied to tater's topic in Science & Spaceflight
https://www.interfax.ru/world/880743 The MS-22 crew will return as planned in MS-23. In case of emergency, Francisco Rubio will return in Dragon (his seat is being relocated), while two Russian crewmen in MS-22. (This will also help because two men produce less heat than three). -
+1! 1 pound = 1 kg 1 ton = 1 tonne = 1000 kg 1 yard = 1 m 1 mile = 1000 m (naut. mile still 1852) 1 foot = 1/4 yard = 25 cm, i.e.a woman foot of ~38 EU. 1 inch = 2.5 cm = 1/10 of ft (which is 25 cm) 1 second = 1 second 1°F = 1K 12 = 10
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Bad science in fiction Hall of Shame
kerbiloid replied to peadar1987's topic in Science & Spaceflight
The movie was as scientifically accurate as a Morse code transtemporal transmission from the 5-dimensional library inside the blackhole is. -
What Country are you from without saying the name of said country?
kerbiloid replied to TheLoneOne's topic in Forum Games!
Because they were several (more than two) medieval countries (principalities) which first had gotten into the Ottoman Empire at once, then gotten out one by one. The Eastern prinicpality (Moldova) became a part of the Russian Empire, the Western principalities became Romania. So, since late XVIII century they were different countries, and the Eastern dialect of Romanian language was named Moldavian because the Eastern principality was exactly Moldova. -
totm dec 2019 Russian Launch and Mission Thread
kerbiloid replied to tater's topic in Science & Spaceflight
Nobody except several persons from US had said even a word about using the Dragon, but the delta-V produced by someone's (firehurt) could already deorbit the whole ISS. -
When you arrive to another planet...
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Granted. Nerds rule. As the mail server is actually on now, I wish to happily finish the JSON parsing today.
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What Country are you from without saying the name of said country?
kerbiloid replied to TheLoneOne's topic in Forum Games!
What do you mean "right there". 1. Is it to the right from the left? 2. Is it a lawyer office where they talk about the rights? -
Bad science in fiction Hall of Shame
kerbiloid replied to peadar1987's topic in Science & Spaceflight
"Et tu, Thorne..." (c) -
Fire Breath For Humanoids... Biologically Possible In Scifi?
kerbiloid replied to Spacescifi's topic in Science & Spaceflight
Mouth sprays would be prohibited. -
Alternatively granted. Rad is obsolete, use Gray instead. 1 Gy = 100 rad, 1 rad = 1 centigray. You get centigrayiation. I wish the mail server is on again.
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Bad science in fiction Hall of Shame
kerbiloid replied to peadar1987's topic in Science & Spaceflight
A conspiracny theory suggestion: The aliens created that wormhole near Saturn to escape from the dying Gargantua system to the safe green oasis of Earth. -
totm dec 2019 Russian Launch and Mission Thread
kerbiloid replied to tater's topic in Science & Spaceflight
In case of emergency for the whole ISS they can try the MS-22, they don't need to stay in orbit for days, they need a deorbit burn. But to the moment there is no emergency, and they will happily wait for MS-23. As we can see, the Dragon-seat hype is entirely on the US side, so the political reasons seem being located erroneously. If someone can do on his own, it's a strange bad taste to start taking others' things.