B. a suitable preposition from the list

from, on, to (2), in (2), before, by (2), of (6), according to

"The interest of research workers has frequently been focused 1).... the phenomenon 2).... regularly shaped crystals suddenly forming 3)... a liquid, e.g. a supersaturated salt solution. 4).... the atomic theory the forming force 5)... this process is to a certain extent the symmetry characteristic 6).... the solution 7).... Schrödinger's wave equation, and to that extent crystallization is explained 8)... the atomic theory. Nevertheless this process retains a statistical and − one might almost say − historical element which cannot be further reduced:even when the state 9).... the liquid is completely known 10).... crystallization, the shape 11).... the crystal is not determined 12).... the laws 13).... quantum mechanics. The formation 14)... regular shapes is just far more probable than that of a shapeless lump. But the ultimate shape owes its genesis partly 15)... an element of chance which 16).... principle cannot be analysed further." Werner Heisenberg

32. Fill in a, the where necessary.

1. "In ___ Einstein's theory of ___relativity the observer is ___man who sets out in quest of truth armed with ____ measuring-rod. In ____ quantum theory he sets out with ____ sieve." Sir Arthur Eddington

2. "_____ gravitation cannot be held responsible for people falling in love." Albert Einstein

3. "In questions of ____ science, the authority of a thousand is not worth ____ humble reasoning of _____ single individual." Galileo Galilei