I don’t think she was playing alone in the yard. The uncle was there and told her to go inside and she ignored him. As for coyotes, with a rottie and springer in the yard, no coyote would be an issue.
However, if you tell the kid to go inside by their mom, tell the mom that you did so. Uncle was a dumb shit. You can’t count on a three year old to do as they’re told.
Yes, what we call the speed of light is really the speed of light in a vacuum. When light passes through a medium like water or glass it travels slower. That causes the light to be refracted which means that it changes direction slightly based on the energy of the light (color) and the refractory index the material. Glass will refract a red laser by a certain amount while water will refract it by a different amount.
Fun fact, because different colors refract differently, when you shine a white light through a specially shaped piece of glass called a prism, you will see a rainbow pattern.
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