in the future - u will be able to do some more stuff here,,,!! like pat catgirl- i mean um yeah... for now u can only see others's posts :c
How can we tell that there is a binary system of stars even if we cannot resolve both stars in a telescope?
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Hey there! Check out my latest video on Cosmology! I go into PAINFUL detail about what exactly spacetime curvature is.
Spacetime Curvature is a fundamental concept in Cosmology and Relativity. There is no way to describe space and time, and the evolution of the Universe since the Big Bang without it. In this introduction to Curvature, I detail the mathematical framework that underpins a space that is homgeneous and isotropic, with a globally uniform constant curvature. I discuss in detail various metrics, and how we measure lengths and areas in such spaces. I also discuss the real machinery of spacetime: tensorial measures of the space using the Riemann Curvature Tensor and its related components.
Most importantly, I try, hopefully not desperately, to demonstrate that there is no reason or need for spacetime to curve "into" anything. Spacetime curvature is a property of the space itself and doesn't a priori demand or dictate extra physical dimensions to accomodate the curvature.
This is the ninth of the videos in my new series of Cosmology. I'm going through Dr. Barbara Ryden's textbook "Introduction to Cosmology". If you follow along, you'll get a full upper-division undergraduate course in Cosmology. I used this textbook at William Paterson University.
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More fun with fisnal exam multiple guess!
Which region of the Sun is primarily responsible for the Sun's spectrum?
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I noticed that YT turned on dubbing by default for all my new videos. Can y'all chime in on whether or not this is a good idea? I am leaning towards not, because I use so many idioms, and I think people want to hear my voice and read a translation.
More specifically, can someone who hears it dubbed by default, can you turn it off?
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I taught introductory Astronomy at William Paterson University from 2011 to 2020, and at CUNY Hunter from 2016 to 2018. In my years of teaching, I tried to make my class innovative and interesting, featuring unique assignments and activities. I've also created a series of over 100 videos covering most of introductory Astronomy. These videos are rigorous enough to be possibly used as a low-level, self-taught Astrophysics class.
Most of the videos on this channel are geared towards a full intro astronomy course. It contains all the content of a typical undergraduate course, and then some.
If you like what you see, please consider supporting me through Patreon.