It's About Time C

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elephantower
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It's About Time C

Postby elephantower » September 27th, 2014, 12:10 am

...this was added. :lol:

:roll: , I know.

Questions to start off:
A clepsydra is also known as what?
What is more accurate, a clepsydra or sand clock?
[S/N]
N/A = didn't compete

2013:
Geologic Mapping: 1, 2
Designer Genes: 3, :(
Astronomy: N/A, :(
2014:
Geologic Mapping: 1, N/A
Protein Modelling: 1, N/A
It's About Time: 1, N/A
Forensics: 9, N/A
2015:
Geologic Mapping: 1, ?
Hydrogeology: 1, ?
It's About Time: 1, ?
Forensics: 10, ?

V_[-_-]_v zoidberg
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Re: It's About TIme

Postby V_[-_-]_v zoidberg » October 4th, 2014, 9:59 am

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?

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Re: It's About TIme

Postby syo_astro » October 5th, 2014, 3:50 pm

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?
Not an answer, but I'd like to comment you could do the experiment on another planet! So the somehow is if we ever get there...but beside the point.
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Re: It's About TIme

Postby John Richardsim » October 24th, 2014, 7:27 pm

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?
It would increase by a factor of 2
Si Quaeris Peninsulam Amoenam Circumspice

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Re: It's About TIme

Postby jhoer » November 2nd, 2014, 4:44 pm

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?
The period would double (increase by a factor of 2), since the new period = 2pi*sqrt(2l/(g/2)) = 2*(2pi*sqrt(l/g)) = 2*(old period).

What property of a simple pendulum did Galileo discover in 1583?

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Re: It's About TIme

Postby fantasyfan » November 3rd, 2014, 6:07 pm

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?
The period would double (increase by a factor of 2), since the new period = 2pi*sqrt(2l/(g/2)) = 2*(2pi*sqrt(l/g)) = 2*(old period).

What property of a simple pendulum did Galileo discover in 1583?
You should wait until V_[-_-]_v verifies your answer before you post a question :D.
However, I hope I don't screw things up too much :oops: if I respond,
I believe it's that the period of the pendulum is independent of the amplitude
Looking forward to anatomy, protein, fossils, and optics (NYS trial) this year!

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Re: It's About TIme

Postby John Richardsim » November 3rd, 2014, 6:41 pm

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?
The period would double (increase by a factor of 2), since the new period = 2pi*sqrt(2l/(g/2)) = 2*(2pi*sqrt(l/g)) = 2*(old period).

What property of a simple pendulum did Galileo discover in 1583?
You should wait until V_[-_-]_v verifies your answer before you post a question :D.
However, I hope I don't screw things up too much :oops: if I respond,
I believe it's that the period of the pendulum is independent of the amplitude
The only problem with that is that that person hasn't been on in a month, so there really is no point in waiting anymore.
Si Quaeris Peninsulam Amoenam Circumspice

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Re: It's About TIme

Postby bernard » November 23rd, 2014, 2:43 pm

clepsydra = water clock.
It is an improvement from sundials.

If the length of a pendulum is doubled, and the gravitational constant of Earth is halved (somehow :P), by what factor does the period increase?
The period would double (increase by a factor of 2), since the new period = 2pi*sqrt(2l/(g/2)) = 2*(2pi*sqrt(l/g)) = 2*(old period).

What property of a simple pendulum did Galileo discover in 1583?
You should wait until V_[-_-]_v verifies your answer before you post a question :D.
However, I hope I don't screw things up too much :oops: if I respond,
I believe it's that the period of the pendulum is independent of the amplitude
Since the asker has not returned to confirm the accuracy of your answer and it seems like you are correct, feel free to ask a question.

Source: "One day, in 1583, while in church at the Cathedral of Pisa, Galileo was watching a chandelier as it swung. From his observations he went home to test the effect of arc length on the time of a pendulum’s period. Galileo found that the time that it took for a pendulum to travel its arc length and back to its starting point was the same regardless of the arc length itself."
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Re: It's About TIme

Postby John Richardsim » December 4th, 2014, 3:34 am

Alright, I think it's about time we get this marathon rolling again:

On what is the second based?
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Re: It's About TIme

Postby Unome » December 4th, 2014, 4:25 am

the number of wavelengths of a certain color of light emitted by a certain atom in the ground state (I think it's cesium)
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