In a recent lecture before the Royal Institution he selected as his subject "The Existence of Bodies Smaller than Atoms ... in order to determine the size of an atom. One method of doing this ...

Compare the size of the nucleus with the size of the atom. \(\frac{larger~value}{smaller~value} = \frac{1 \times 10^{-10}}{1 \times 10^{-14}} = 10,000\) So the atom is 10,000 times larger than the ...