Answer | Crossword Clue |
---|---|
actinometries | ACTINOMETRY, the measurement of heating power of the sun's rays |
actinometrical | relating to actinometry, measurement of heating power of the sun's rays also ACTINOMETRIC |
actinometric | relating to actinometry, measurement of heating power of the sun's rays also ACTINOMETRICAL |
actinometry | the measurement of heating power of the sun's rays |