DonFerrari said:
o_O.Q said:
"What is the opposite of a straight line?"
that is an interesting one i'm honestly not sure but i'd say that the opposite of straight would be bent i would think
"Can't use all that isn't one thing (like infinite things) as opposite to a single thing."
i don't understand
"Also the "laws" you used (sine wave) isn't verified perfectly as that in the nature, they are perfect sine in theorical description, if you measure most of the things that generate sine wave it won't be perfect sine"
sure because there is a difference between ideal/theoretical and practical
however, i didn't say that would be the case what i did say is that the sine wave can be used to model the opposing forces that form our reality
" also, what is the opposite of Sine? "
any wave that cancels it therefore a wave with the same magnitude and frequency that is 180 degrees out of phase with it
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The first two items are the answer for the question...
There are infinite things that aren't a perfect straight line, so you can't say not straight (or bent) is the opposite of straight (they are opposite just in gramatic but not in mathematic).
Again what I'm saying is that in logic you can 't have one thing opposite to all else that isn't it... opposition is binary. Like the method to prove something is right is like proving that all else is wrong (won't enter the details, but it basically is proving by negative).
Sine wave is the way human can use to explain (or model) the things in nature. It doesn't necessarily mimic the phenomenom.
if you put phase 180 degrees for sine you still get sine. cosine is the 90 degree phase of sine. So they aren't exactly opposites, you could use them as they are binary in opposition. Now you see the difference?
The cold/hot opposition per example... it really is amount of heat and how you perceive... so 0k or absolute zero (would be your coolest point) is the "total absence of heat" while we still don't know what is the maximum existing heat as far as I'm aware to have the 2 opposites, altough they wouldn't be opposite, just the 2 extremes of a scale.
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"There are infinite things that aren't a perfect straight line"
you mean like exponential increase?
"if you put phase 180 degrees for sine you still get sine"
yes its still a sine wave but due to displacement its the opposite of the original which is why why have technology like noise cancellation
waves that are exactly out of phase are used to cancel the sound waves that are unwanted when someone is listening to music
sure the two sets of waves have the same shape ( like with the sine example ) but they are different/opposite in the sense that they are out of phase which is why they cancel
" while we still don't know what is the maximum existing heat as far as I'm aware to have the 2 opposites, altough they wouldn't be opposite, just the 2 extremes of a scale."
that is a good point its true that increasing heat and increasing lack of heat don't proportionally rise to two exact opposites because i think at some point as you said a point is reached where 0k is reached so molecules stop moving while we don't know as of yet what the hottest temperature possible is
but wait hold on i'm sure that i've heard of a substance going down past zero kelvin before
oh yeah here
http://www.livescience.com/25959-atoms-colder-than-absolute-zero.html
but still you have a point there its just that this is something that i'm honestly seeing everywhere
even politics with the left and right, on the left people that want more and more control being imposed while the right wants the opposite less control more freedom