To find the cloud ceiling, one night an observer directed a spotlight vertically at the clouds. Using a theodolite placed 100m from the spotlight and 1.5 m above the ground, he found
Large Tall High Outdoor Stadium Halogen Spotlight With Lamp Light Turned On And Sky Clouds In Twilight. Stock Photo, Picture And Royalty Free Image. Image 80917500.
I converted an LED flashlight into a long-range spotlight by focusing the beam through a
Sunrise over the clouds with karst formation mountains in Guilin, Yangshuo, China | Windows 10 Spotlight Images
Clouds at sunrise over Haleakala Crater on Maui, Hawaii, USA | Windows 10 Spotlight Images
Spot Light Pole on Blue Sky and Clouds. Stock Photo - Image of tall, spotlight: 106053410
Spot Light Pole and the Beautiful Clouds and Sky at Airport. Spotlight with Radio Control Stock Image - Image of beam, electricity: 196027775
Song Spotlight: "Mr. Blue Sky" - Soundscaping Source
Extreme weather at sunset with rays of light over storm clouds, Carlsbad, New Mexico, USA | Windows 10 Spotlight Images
Dramatic Skies and Clouds in the Evening before Rain Fall with a Single Spotlight. Stock Photo - Image of spotlight, rainy: 128058632