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/sci/ - Science & Math

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1098493 No.1098493 [Reply] [Original]

Well I just drank a snapple and the bottle cap said "quartz crystals vibrate 32768 times a second", nothing new but I began to think. Since I'm a curious fellow I began wondering how humans developed "time".

Like how was the length of a second decided?

>> No.1098501

touch dicks

>> No.1098513

As 1. / 24 / 3600 of a day. The definition changed later.

>> No.1098514

god dictated the length.

>> No.1098519

A seconds was roughly the duration of 3 barleycorns in olden times. We get it from that.

>> No.1098548
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1098548

>>1098513
Well how did they measure the length of a day?
The sun goes down at like 7pm how could they tell when it had become midnight?

I'm still lost.

>> No.1098553

>>1098493
A second is approximately the length of 30 to the power of peter

>> No.1098554

>>1098548
shadows and stars you faggot, gtfo and google.

>> No.1098555

>>1098548
aliens told them
aliens did holocaust and we hid the truth from the younger generation
hilter was an alien

everything you know is a lie

>> No.1098562

A 1m long pendulum takes 1 second to swing from side to side.

>> No.1098566

>>1098554
Shit man I thought this board was called Science & Math not google.
What's the point of this board if all you're gonna do is tell people to google.

>> No.1098568

Real answer:
Seconds were originally called "second minutes" because they were a minute of a minute (1/60 of 1/60th of an hour). Once accurate clocks became more common people shortened it to seconds.

>> No.1098572

>>1098568
Well I was wondering how they figured out the duration of a minute.
Still a nice fact to know.

>>1098562
Interesting

>> No.1098585

>>1098572
1/60th of an hour. And why 60? Same reason a circle is 360 degrees; they wanted a number that's easily divisible by a bunch of shit. 1/3 hour? 20 min, 1/4 hr? 15 min, 1/6? 10 min, etc

>> No.1098613

http://en.wikipedia.org/wiki/Second