Register to reply

Unity means just plain regular 1 ?

by kahwawashay1
Tags: means, plain, regular, unity
Share this thread:
kahwawashay1
#1
Apr2-12, 08:39 PM
P: 96
Im not sure whether this is a physics or math question, but in many physics problems, instead of saying "1", the problem will say "unity", like "the sine of theta is unity" or the "index of refraction is unity". I am assuming "unity" means just plain regular "1"? Is there a particular reason for such funny word use?
Phys.Org News Partner Physics news on Phys.org
Symphony of nanoplasmonic and optical resonators produces laser-like light emission
Do we live in a 2-D hologram? New Fermilab experiment will test the nature of the universe
Duality principle is 'safe and sound': Researchers clear up apparent violation of wave-particle duality
tiny-tim
#2
Apr3-12, 05:01 AM
Sci Advisor
HW Helper
Thanks
tiny-tim's Avatar
P: 26,148
hi kahwawashay1!
Quote Quote by kahwawashay1 View Post
I am assuming "unity" means just plain regular "1"? Is there a particular reason for such funny word use?
yes, just good ol' "1"

i'm not sure why, perhaps people think that if they write "the sine is one", the reader will think "one of what?", and if they write "1" it looks like I or l
or maybe they just like to use long words because "1" isn't big enough!
Vanadium 50
#3
Apr3-12, 06:43 AM
Mentor
Vanadium 50's Avatar
P: 16,348
Unity is not just "one". It is a "dimensionless one". You can have 1 meter or 1 kelvin or 1 candela, but none of these are properly called "unity".


Register to reply

Related Discussions
In binary can we have a value with deci centi mili or more lower valued prefix? Computers 14
Can one approximate an ether frame by analyzing superimposed rotating frames? Classical Physics 0
Difference between Identical , Equal , Equivalent Calculus & Beyond Homework 9
Lawmakers oppose political speech, citing national unity Current Events 5