Recent comments in /f/todayilearned
DumbbellDiva92 t1_jdy5jjy wrote
Reply to comment by Echo71Niner in TIL about Lillan Bloodworth, who donated blood every 56 days for nearly 50 years. By the time she stopped at age 85, she had donated 23 gallons. (The average person's body contains about 1.5 gallons.) by WouldbeWanderer
Assuming she is American. It’s 56 days regardless of sex here.
kecar t1_jdy5fyk wrote
Reply to comment by bulksalty in TIL on 1924, for the Olympic Games, BRitish athlete Eric Liddell refused to run the 100 metres since it was set on Sunday, instead choosing to run the 400 metres by Johannes_P
With beach running scenes!
Crepuscular_Animal t1_jdy53zd wrote
Reply to comment by Godtiermasturbator in TIL: A family of 12 performers, 7 of whom were dwarves, all survived Auschwitz after being separated by Mengele. Several prisoners who survived claimed they believed they were hallucinating when they saw seven well-dressed dwarves passing by. by 0verlyAnxious
It is said that the sick fuck actually tried to make conjoined twins out of a pair of ordinary Roma twins.
Vikkly t1_jdy53hh wrote
Reply to comment by MongFondler in TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
Came here to read this comment, it's my new mantra.
MostBotsAreBad t1_jdy4v5s wrote
Reply to TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
Yes, but technically they're flying outside of every planet's atmosphere.
DumbbellDiva92 t1_jdy4uyw wrote
Reply to comment by Carbon_Rod in TIL about Lillan Bloodworth, who donated blood every 56 days for nearly 50 years. By the time she stopped at age 85, she had donated 23 gallons. (The average person's body contains about 1.5 gallons.) by WouldbeWanderer
Yeah I had to cut back to twice a year or so. Also heard in some other countries the time between donations is longer for women.
nim_opet t1_jdy4mjm wrote
Reply to comment by zillskillnillfrill in TIL that the EU forces soda makers to introduce tethered caps to make sure they are being recycled. by memeiel
They are no longer HDPE, they are PET like the bottle!
i_hate_gift_cards t1_jdy47ym wrote
Reply to comment by Dicky_Penisburg in TIL about Lillan Bloodworth, who donated blood every 56 days for nearly 50 years. By the time she stopped at age 85, she had donated 23 gallons. (The average person's body contains about 1.5 gallons.) by WouldbeWanderer
It's also called the frequency illusion. That one's a little easier to remember lol
YewKnowMe t1_jdy3vv1 wrote
Reply to comment by 0verlyAnxious in TIL: A family of 12 performers, 7 of whom were dwarves, all survived Auschwitz after being separated by Mengele. Several prisoners who survived claimed they believed they were hallucinating when they saw seven well-dressed dwarves passing by. by 0verlyAnxious
Ah, thank you for this! Still, its seems convenient there were 7 of them...
Dr-Retz t1_jdy3clt wrote
Reply to comment by MongFondler in TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
Man that’s a lot.Ima just read the first sentence and hope all our money went to something that works properly.
Snax6310 t1_jdy3bis wrote
Reply to TIL in the tiny African kingdom of Lesotho, a local style of accordion folk music known as Famo has sprung a fierce bloody gang war which has contributed to its high homicide rate. Little-known to the outside world, scores of musicians and hundreds of DJs, fans, family members etc. have been slain. by delano1998
Hey I’ve been there! Didn’t hear an accordion, or get murdered. Did have a great meal though. 7/10
Checkered-King t1_jdy2vhy wrote
Reply to comment by slawsy in TIL that the EU forces soda makers to introduce tethered caps to make sure they are being recycled. by memeiel
I (23) struggled to get them closed properly as well
MongFondler t1_jdy21x2 wrote
Reply to TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from a position where it is to a position where it isn't, and arriving at a position where it wasn't, it now is. Consequently, the position where it is, is now the position that it wasn't, and it follows that the position that it was, is now the position that it isn't. In the event that the position that it is in is not the position that it wasn't, the system has acquired a variation, the variation being the difference between where the missile is, and where it wasn't. If variation is considered to be a significant factor, it too may be corrected by the GEA. However, the missile must also know where it was. The missile guidance computer scenario works as follows. Because a variation has modified some of the information the missile has obtained, it is not sure just where it is. However, it is sure where it isn't, within reason, and it knows where it was. It now subtracts where it should be from where it wasn't, or vice-versa, and by differentiating this from the algebraic sum of where it shouldn't be, and where it was, it is able to obtain the deviation and its variation, which is called error.
RamboDanza t1_jdy1oft wrote
Reply to comment by Viperion_NZ in TIL about Lillan Bloodworth, who donated blood every 56 days for nearly 50 years. By the time she stopped at age 85, she had donated 23 gallons. (The average person's body contains about 1.5 gallons.) by WouldbeWanderer
God dammit monstah! We work for our money 'round here!
AdoltTwittler t1_jdy1dfd wrote
Reply to TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
As did the Apollo missions. Same group created the navigation hardware and software
0verlyAnxious OP t1_jdy1avp wrote
Reply to comment by YewKnowMe in TIL: A family of 12 performers, 7 of whom were dwarves, all survived Auschwitz after being separated by Mengele. Several prisoners who survived claimed they believed they were hallucinating when they saw seven well-dressed dwarves passing by. by 0verlyAnxious
that came out far before ww2, but snow white was one of hitler's favorite movies.
halfpipesaur t1_jdy1aac wrote
Reply to TIL that the EU forces soda makers to introduce tethered caps to make sure they are being recycled. by memeiel
What? We’ve been doing the exact opposite for the very same reason for years now: separating the bottle and the cap because they’re made from different materials and it’s easier to recycle the caps that way.
haveueverseenallama t1_jdy0sae wrote
Reply to TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
Cheers. My girl still doesn't care why knowing how to use a sextant is as important as Morse or flags. However I DO!
Echo71Niner t1_jdy0jk6 wrote
Reply to TIL about Lillan Bloodworth, who donated blood every 56 days for nearly 50 years. By the time she stopped at age 85, she had donated 23 gallons. (The average person's body contains about 1.5 gallons.) by WouldbeWanderer
Something is off here, in Canada females must wait 84 days between blood donations.
Men wait 56 days
https://www.blood.ca/en/blood/am-i-eligible-donate-blood/abcs-eligibility
wet-paint t1_jdxzzhk wrote
Reply to comment by TurboThrobber in TIL that the EU forces soda makers to introduce tethered caps to make sure they are being recycled. by memeiel
Lidl do it with their sparkling water.
jwg020 t1_jdxzz1u wrote
Captainmanic OP t1_jdxzo7a wrote
neoengel t1_jdxzmf4 wrote
Reply to TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
Hopefully, a real (end of the) world scenario doesn't test out how effective it will be.
On that tangent, the SR71 Blackbird reconnaissance plane used a high-tech sextant behind the cockpit similarly by using the stars to navigate at the upper atmosphere.
aarkwilde t1_jdxz6gq wrote
Reply to TIL intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. by Captainmanic
Because at that point gps may be gone?
bebop1065 t1_jdy6mlb wrote
Reply to TIL that the EU forces soda makers to introduce tethered caps to make sure they are being recycled. by memeiel
Wut about my freedom? I can just hear this complaint if US manufacturers have to do the same.