Crossword-Solution: VACUO 5 letters, 2 clues 🏆 scrabble score: 10

This letter from a busy youth of three and twenty, breathes of seventeen: the sickening alternations of conceit and shame, the expense of hope _in vacuo_, the lack of friends, the longing after love; the whole world of egoism under which youth stands groaning, a voluntary Atlas.

Within a few days this was followed by experiments with the same kind of carbon, but in vacuo by means of a hand-worked air-pump.

Not only were the ordinary strip paper carbons tried again, but tissue-paper coated with tar and lampblack was rolled into thin sticks, like knitting-needles, carbonized and raised to incandescence in vacuo.

Eight forms of electric lamps using infusible earthy oxides and brought to high incandescence in vacuo by high potential current of several thousand volts; same character as impingement of X-rays on object in bulb.

Carbon crucible kept brilliantly incandescent by current in vacuo, for obtaining reaction with refractory metals.