Results 141 to 150 of about 776,151 (280)
Proceedings of Observatories Royal Observatory, Greenwich [PDF]
Monthly Notices of the Royal Astronomical Society, 1943 openaire +6 more sources
Introduction: Everyone and everything has a shadow. Shadows illustrate how threedimensional objects can be viewed in two dimensions. Younger students can learn about the Sun’s relative motion in the sky as they experiment with shadows.McDonald ...
McDonald Observatory +1 more
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Introduction: Can gelatin (like Jell-O) change the speed of light? Students investigate the refraction properties of gelatin to calculate its index of refraction and discover that as the light travels through the gelatin, its speed and wavelength also ...
McDonald Observatory +1 more
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Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska [PDF]
, 1989 John B. Townshend +2 more
openalex +1 more source
XMM-Newton observatory. I. The spacecraft and operations
, 2001 F. Jansen +14 more
semanticscholar +1 more source
Introduction: This reflective solar cooker uses the Sun’s energy to cook marshmallows. The target cooking area is the space where the light concentration is greatest. Never look directly at the Sun! It could damage your eyes. Don’t allow the cooker to
McDonald Observatory +1 more
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The IceCube Neutrino Observatory II: All Sky Searches: Atmospheric, Diffuse and EHE [PDF]
, 2011 Rasha Abbasi +99 more
openalex
Introduction: One of astronomy’s first tools to measure the flow of time, a sundial is simply a stick that casts a shadow on a face marked with units of time. As Earth spins, the shadow sweeps across the face.
Mcdonald Observatory +1 more
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