. . Suppose presently we find it
is possible to quicken that decay?'
The chuckle-headed lad nodded rapidly. The wonderful inevitable idea was
coming. He drew his knee up towards his chin and swayed in his seat with
excitement. 'Why not?' he echoed, 'why not?'
The professor lifted his forefinger.
'Given that knowledge,' he said, 'mark what we should be able to do! We
should not only be able to use this uranium and thorium; not only should
we have a source of power so potent that a man might carry in his hand
the energy to light a city for a year, fight a fleet of battleships, or
drive one of our giant liners across the Atlantic; but we should also
have a clue that would enable us at last to quicken the process of
disintegration in all the other elements, where decay is still so slow
as to escape our finest measurements. Every scrap of solid matter in the
world would become an available reservoir of concentrated force. Do you
realise, ladies and gentlemen, what these things would mean for us?'
The scrub head nodded. 'Oh! go on. Go on.'
'It would mean a change in human conditions that I can only compare to
the discovery of fire, that first discovery that lifted man above the
brute. We stand to-day towards radio-activity as our ancestor stood
towards fire before he had learnt to make it.
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