from The Century Dictionary.
- noun In photometry, a unit of quantity of light; the energy derived in one hour from the total light-flux from a source of light of one candle-power.
Sorry, no etymologies found.
It will be seen that the original oil-gas, when compressed to 10 atmospheres, gave a light of 1 candle-hour for an average consumption of
When these burners are used at the pressure most suitable for twin burners their consumption is about one-third greater than that of the latter per candle-hour.