so basically dark energy was there before but 7.5 billion years ago "if this chart is correct" it started to become dominant and now experts estimate that the energy takes up about 68.3 % of the known universe. What other theories are out there besides the dark energy theory for our increased...
Also i just saw a diagram of the history of our universe and it showed that at a time our universe was expanding slower but then all of a sudden dark energy appeared and increased it's expansion to today's rate. How does dark energy appear when all the energy and matter that would ever be in the...
I like physics involving the cosmos. I was wondering what theories are out there that explain how the observable universe is expanding at an increased rate rather then slowing down due to gravity or other variables. I know the dark energy theory that basically states there's a energy that...
Matter is defined as anything that occupies space and has mass. While mass is defined as something that represents the amount of matter in a particular space or particle. Matter can be measured using volume weight and many other units while mass is only measured in kilograms . They use matter to...
Well my Advice for starters would be to use leverage to increase the torgue or the rpm based on your needs. Second if your using the wind turbine to make Alternating current (which i assume because mechanical motion is often used to make ac current) I suggest you use transformers so you can...
well I don't know if this is legitimate or not. There is a way of making light appear like that perhaps without stopping the light particles. What you do is use a series of lasers that output light at a certain phase and are barely visible or invisible to the naked eye (because the light's...
i was planning on using the back EMF current produced by a inductor to power a high powered CO2 laser but i am using a relay to activate the laser and i was wondering what the resistance/resistivity of carbon dioxide because it will act like a current source and would flow through the branch...
I see so the collapsing magnetic field induces a voltage in the coil when the field lines cross the loops in the wire so then the voltage spikes keeping the back current equal to the current ran through the coil initially for a brief period. That helped immensely and sorry about the the second...
I thought their is no infinite resistance in the universe for example i know the atmosphere on Earth is approximately 2^16 ohms/meter is it's resistivity so i don't know
I apologize if this question is a bit confusing, but I am studying electrical engineering and what keeps baffling me is why when you run current through an inductor then place an open in the circuit how come the Back EMF current is able to cause a spark across the open. I get that the inductor...
The universe is relative their is no fixed point so there is no clear direction also our 3 dimensional universe is expanding in all directions so simply by going in a certain direction will not cause you to go to a different universe although interestingly some scientists say their might be...
Hello my name is Jacob Irwin and i am currently a few months away from graduating with an associates degree in computer hardware and software engineering. I love physics and the various ways we can use it to predict outcomes in reality with exceptional accuracy. I am glad to be apart of this...
I wanted to do a science experiment and it is very important that i learn the electrical resistance of carbon dioxide. From what i would guess, this may be wrong, but carbon dioxide and the atmosphere on Earth probably have a similar electric resistance due to the fact carbon dioxide already...