Light moves through empty space with a single speed, no matter what the observer is doing 17. June 2014 “Light moves through empty space with a single speed, no matter what the observer is doing” – How to Teach Relativity to Your Dog by Chad Orzel
5 thoughts on “Light moves through empty space with a single speed, no matter what the observer is doing”
Bivalves live a life with little awareness of its environment or itself. They lack a head and have little in the way of a sensory system, but some species can sense light and shadows. Some bivalves even have eyes. Some sense their environment through mechanical touch, and others sample the chemical content of water. Don’t know if this is a clam or an oyster, perhaps neither, but I’m safe in assuming it will never move at close to the speed of light or think about the speed of light.
Oh, I didn’t know any of this. And I learned a new word: bivalve. Thank you for both, the interesting facts and the new word!
No idea what it is, don’t think a oyster, though.
At the Botanical Garden open day last Sunday there were some dealers, a water plant dealer showed some things in aquariums. This one was the most interesting to photograph.
Might be a round clam?
For some strange reason the shells of this animal are called valves. There are two of them in this class of animals called “bivalves” which include clams, oysters, mollusks, mussels, and others. Many of them are eaten by people. This clam didn’t seem threatened by your photographing it or it would have clammed up.
I’m not sure if a rabid clam might not move at at least 185,900 miles per hour.
I don’t think light travels in imperial units … :-P
Clams get rabies? :-P again