Definition/Meaning  Word/Phrase 
speculative or theoretical 
academic

acidlike substance, theoretical 
alkahest

theoretical distribution of the number of successes in a finite set of independent trials with a constant probability of success 
Bernoulli distribution
,
binomial distribution

English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (19021984) 
Dirac
,
Paul Adrien Maurice Dirac

(statistics) an arrangement of values of a variable showing their observed or theoretical frequency of occurrence 
distribution
,
statistical distribution

theoretical distribution with finite mean and variance 
Gaussian distribution
,
normal distribution

English theoretical physicist (born in 1942) 
Hawking
,
Stephen Hawking
,
Stephen William Hawking

concerned with theoretical possibilities rather than actual use 
impracticality

theoretical sun that moves along the celestial equator at a constant speed and completes its annual course in the same amount of time the real sun takes at variable speeds 
mean sun

United States physicist (born in Austria) who proposed the exclusion principle (thus providing a theoretical basis for the periodic table) (19001958) 
Pauli
,
Wolfgang Pauli

theoretical distribution that is a good approximation to the binomial distribution when the probability is small and the number of trials is large 
Poisson distribution

concerned with actual use rather than theoretical possibilities 
practicality

practical, not theoretical 
pragmatic

branch of physics that makes theoretical predictions about the behavior of macroscopic systems on the basis of statistical laws governing its component particles 
statistical mechanics

United States theoretical physicist (born in 1933) 
Steven Weinberg
,
Weinberg
