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Ne4ueva [31]
3 years ago
14

How did scientists originally view the idea of an expanding universe?

History
1 answer:
Fiesta28 [93]3 years ago
5 0
By using and testing Einstein's theory of General Relativity, scientists have observed galaxies moving away from Earth. A few years after Albert Einstein had developed his famous (and by now very well tested!) theory of General Relativity (GR) in 1915 he applied it to the entire universe and found something remarkable. The theory predicts that the whole universe is either expanding or contracting. There really isn't any other alternative. To have the universe staying static is like a pencil balanced on its point... possible, but very, very unlikely and not liable to last for very long. Since the time of Hubble we have observed millions of galaxies with better equipment and verified his results. With the exception of a small handful of galaxies close to us, every galaxy is moving away from us. And in fact, the farther away a galaxy is the faster it is moving away from us. This fits in very well with Einstein's predictions. The galaxies seem to be receding from us because the entire universe is getting larger. The space in between the galaxies is stretching! And the farther away a galaxy is the more space there is to stretch so the faster the galaxy appears to move away from us.

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Starting off, dogs are an enormous responsibility. Even when people claim they'll take care of their dogs, it's hard to remember the little things. For instance, how much food they need a day, how many walks they need in a week, when they last went to the bathroom, and a bunch of other questions come to mind when dog owners are questioned about the brutality of owning a dog. It takes a lot more effort than often given credit for.

However, once you've established a healthy relationship, pattern, and schedule with a dog, life becomes a lot easier. You're able to better understand the dog's likes and dislikes, favorite people, least favorite sounds, etc. You can begin teaching your dog new tricks by using treats, tones of gratitude, and repetition to teach how you want your dog acting. It's hard to train a dog the older they get, so it's best to teach it as soon as it's physically ready.

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7 0
3 years ago
what is the difference in degrees between an actual temperature of 35 degrees and that temperature combined with a wind speed of
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However, I believe you are meaning to ask what the difference feels like if you were subject to these conditions, this is a more complex answer. (Assuming that your skin temperature is greater than 35 degrees) You first need to understand that a change in wind speed would only decrease the time taken for your skin to equalise it's temperature to the surrounding air and thus feel 'colder', this is because more air is flowing over your skin per unit of time.
There are multiple other factors in determining what the 'feels like' temperature would be, such as taking into account the humidity and density of the air combined with our understanding of how heat is lost from the human body.
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Answer:

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Explanation:

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