actinograph
/akˈtɪnəɡrɑːf/ /akˈtɪnəɡraf/noun
1An instrument for recording variations in the intensity of solar radiation.
2 Photography. A form of calculator for estimating the actinic power of daylight, to aid in determining an appropriate exposure. Now historical.
Origin
Mid 19th century; earliest use found in John Herschel (1792–1871), mathematician and astronomer. From actino- + -graph.
- well-apparelled
- well-applied
- well appointed
- well-approved
- well-argued
- well-armed
- well-armored
- well-armoured
- well-arranged
- well-arrayed
- well-articulated
- well-asserted
- well-assorted
- well-assured
- well attended
- well-attending
- well-attested
- well-attired
- well-authenticated
- well aware
- wellaway
- well-baked
- well balanced
- well beam
- well-beaten