Today I Learned
Jul 20th 2017, 5:11 am
#1
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Today I Learned
New idea, just put something you learned today.... Good or bad.
I'll start with two (admittedly one was yesterday but hey ho.
I'll start with two (admittedly one was yesterday but hey ho.
The reason the metro and Tram have windscreen wipers on when they're driverless is because there is a camera inside the "cab" that the operators can see from their control place.
Geiger counters and the like that have to be very sensitive to radiation, have to be made out of stuff called 'Low background steel', steel made before the first atomic bombs were detonated.
All steel after that will be very slightly radioactive.
They use steel from WW1 battleships don't you know.
All steel after that will be very slightly radioactive.
They use steel from WW1 battleships don't you know.
Jul 20th 2017, 7:30 am
#2
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Joined: Feb 2011
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Re: Today I Learned
Not sure I have learned anything today, yet. I hope I do.
I met a new colleague in Australia if that counts, we had a video call and I will keep in touch and help him with some of the work down under, which is always cool.
I met a new colleague in Australia if that counts, we had a video call and I will keep in touch and help him with some of the work down under, which is always cool.
Jul 20th 2017, 8:00 am
#3
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Joined: Jul 2008
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Re: Today I Learned
i'm with SCAMP....not learned anything new today, yet!
Jul 20th 2017, 3:03 pm
#5
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Posts: 990
Re: Today I Learned
Well I learnt that chocolate has seizures!!
Jul 21st 2017, 6:55 am
#7
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Joined: Mar 2017
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Re: Today I Learned
Geiger counters and the like that have to be very sensitive to radiation, have to be made out of stuff called 'Low background steel', steel made before the first atomic bombs were detonated.
All steel after that will be very slightly radioactive.
They use steel from WW1 battleships don't you know.
All steel after that will be very slightly radioactive.
They use steel from WW1 battleships don't you know.
Jul 21st 2017, 5:30 pm
#8
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Jul 22nd 2017, 5:41 am
#10
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Posts: 4,641
Re: Today I Learned
New idea, just put something you learned today.... Good or bad.
I'll start with two (admittedly one was yesterday but hey ho.
I'll start with two (admittedly one was yesterday but hey ho.
The reason the metro and Tram have windscreen wipers on when they're driverless is because there is a camera inside the "cab" that the operators can see from their control place.
Geiger counters and the like that have to be very sensitive to radiation, have to be made out of stuff called 'Low background steel', steel made before the first atomic bombs were detonated.
All steel after that will be very slightly radioactive.
They use steel from WW1 battleships don't you know.
All steel after that will be very slightly radioactive.
They use steel from WW1 battleships don't you know.
Jul 22nd 2017, 6:02 am
#11
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Posts: 990
Re: Today I Learned
Well I was dubious as well but here is the answer;
https://en.wikipedia.org/wiki/Low-background_steel
Jul 22nd 2017, 11:39 am
#12
Joined: Dec 2001
Location: Dixie, ex UK
Posts: 52,448
Re: Today I Learned
Per the article linked by Dubaiexile, new iron made from only iron ore would now be nearly as good as the pre-nuclear recycled scrap.
Jul 22nd 2017, 1:41 pm
#13
Still alive
Joined: Jan 2006
Posts: 28,994
Re: Today I Learned
Today I learned that I really, truly hate the kind of music 17 year olds listen to. Next door neighbours are having a 17th birthday party for their daughter and the DJ may as well be in my lounge room 
Jul 22nd 2017, 1:46 pm
#14
Joined: Dec 2001
Location: Dixie, ex UK
Posts: 52,448
Re: Today I Learned
). His buddies come over and they jam to AC/DC, Zeppelin, Skynyrd etc. 
Jul 23rd 2017, 7:20 am
#15
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Joined: Feb 2017
Location: Dubai
Posts: 237
Re: Today I Learned
I've learned that when you sneeze, your heart stops for a second hence saying Humm Dillilah or Bless You