Questions to start off:
A clepsydra is also known as what?
What is more accurate, a clepsydra or sand clock?
Re: It's About TIme
Posted: October 4th, 2014, 9:59 am
by V_[-_-]_v zoidberg
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 ), by what factor does the period increase?
Re: It's About TIme
Posted: October 5th, 2014, 3:50 pm
by syo_astro
V_[-_-]_v zoidberg wrote: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 ), 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.
Re: It's About TIme
Posted: October 24th, 2014, 7:27 pm
by John Richardsim
V_[-_-]_v zoidberg wrote: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 ), by what factor does the period increase?
It would increase by a factor of 2
Re: It's About TIme
Posted: November 2nd, 2014, 4:44 pm
by jhoer
V_[-_-]_v zoidberg wrote: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 ), 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?
Re: It's About TIme
Posted: November 3rd, 2014, 6:07 pm
by fantasyfan
jhoer wrote:
V_[-_-]_v zoidberg wrote: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 ), 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 .
However, I hope I don't screw things up too much if I respond,
I believe it's that the period of the pendulum is independent of the amplitude
Re: It's About TIme
Posted: November 3rd, 2014, 6:41 pm
by John Richardsim
fantasyfan wrote:
jhoer wrote:
V_[-_-]_v zoidberg wrote: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 ), 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 .
However, I hope I don't screw things up too much 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.
Re: It's About TIme
Posted: November 23rd, 2014, 2:43 pm
by bernard
fantasyfan wrote:
jhoer wrote:
V_[-_-]_v zoidberg wrote: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 ), 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 .
However, I hope I don't screw things up too much 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."
Re: It's About TIme
Posted: December 4th, 2014, 3:34 am
by John Richardsim
Alright, I think it's about time we get this marathon rolling again:
On what is the second based?
Re: It's About TIme
Posted: December 4th, 2014, 4:25 am
by Unome
the number of wavelengths of a certain color of light emitted by a certain atom in the ground state (I think it's cesium)
, I know. 
), by what factor does the period increase?
.
if I respond,