Register to reply

F = 1/T? What does it mean?

by threy
Tags: 1 or t
Share this thread:
threy
#1
Jan8-14, 09:42 AM
P: 18
What does this formula means:

f = 1/T

I don't get this. Please explain the relationship between frequency and period and the formula above thanks :)
Phys.Org News Partner Physics news on Phys.org
Refocusing research into high-temperature superconductors
Neutron tomography technique reveals phase fractions of crystalline materials in 3-dimensions
Tiny magnets, huge fields: Nanoscale ferromagnetic electrodes create chemical equivalent of solid-state spin valve
jedishrfu
#2
Jan8-14, 09:44 AM
P: 2,812
Its described here:

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

from the article:

For example, if a newborn baby's heart beats at a frequency of 120 times a minute, its period (the interval between beats) is half a second.
jtbell
#3
Jan8-14, 10:34 AM
Mentor
jtbell's Avatar
P: 11,630
Using different units in that example obscures the relationship a bit. A frequency of 120 beats per minute corresponds to a period of 1/120 of a minute per beat. Continuing, 1/120 of a minute = 1/2 second.

Or to match the original formula better: a period of 1/2 second per beat corresponds to a frequency of 1/(1/2) beats per second = 2 beats per second. Continuing, 2 beats per second = 120 beats per minute.

xAxis
#4
Jan8-14, 10:51 AM
P: 208
F = 1/T? What does it mean?

agree with jtbell, bad example from wiki. It's simple math, threy. If you tnink about it the same way you think of ax=b there is no confusion. The trick is that T is time for 1 oscilation, so ax=b becomes ax=1.
jagdishdash
#5
Jan8-14, 01:06 PM
P: 11
It simply means frequency is inversely proportional to time taken to complete one oscillation
and proportionality constant is 1
Chestermiller
#6
Jan8-14, 07:20 PM
Sci Advisor
HW Helper
Thanks
PF Gold
Chestermiller's Avatar
P: 5,067
The frequency f is the number of cycles per second. The period T is the number of seconds per cycle.

Chet
phinds
#7
Jan8-14, 07:28 PM
PF Gold
phinds's Avatar
P: 6,129
Quote Quote by Chestermiller View Post
The frequency f is the number of cycles per second. The period T is the number of seconds per cycle.

Chet
Beautifully clear and concise explanation that says it all.

You've done this before, haven't you
tony873004
#8
Jan8-14, 07:28 PM
Sci Advisor
PF Gold
P: 1,542
If you can walk around the block in 1/2 hour, (30 minutes) then you can do it 2 times in one hour.
If you can walk around the block in 1/3 hour (20 minutes) then you can do it 3 times in one hour.
If you can walk around the block in 1/4 hour (15 minutes) then you can do it 4 times in one hour.
If you can walk around the block in 1/10 hour (6 minutes) then you can do it 10 times in one hour.


Register to reply