Odd question: anyone know if i can take a negative spin as positive? Cause electron spin is +/-, but on my data sheet ive got some -'s. Like Nitrogen 15 being -1/2 which ****s up my NMR calculations. Am i missing something, should they specifically adhere to the data sheet or should i just ignore it. Google isnt very helpful for anything more complicated than the simplest stuff or definitions or completely irrelevent stuff.
As far as I remember the spin is important because it is different for matter and antimatter (i.e. electrons and positrons). Unsure if this is going to be a problem in an NMR situation but I'm 90% +ve that it is important (remembering old A-level physics).
erm afaik 15N is spin +1/2. I dont think nuclei can have negative spin. According to ze textbook: even protons + even neutrons: I = 0 odd protons + odd neutrons: I = integer even protons + odd neutrons: I = 1/2 integer odd protons + even neutrons: I = 1/2 integer I is never negative
