Eduardo Guerras Valera

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I am an astrophysicist. What I do is mainly computational and observational, focused on extragalactic astronomy and gravitational lensing. Additionally, I like to improve my modest background in theoretical physics.


48 Answers

newest activity votes
10
How can the speed of light be a dimensionless constant?
feb 3 at 18:53
8
What is the Earth truly rotating about/revolving around?
may 30 at 14:44
8
What was Albert Einstein's proof for $E=mc^2$?
nov 10 at 15:22
7
Difference between $\partial$ and $\nabla$ in general relativity
jan 18 at 22:22
7
How much of the universe is observable at visible wavelengths?
dec 7 at 14:03
6
How (or why) equivalence principle led to Einstein field equations?
apr 21 at 23:59
6
Why does smoke go out the window of the car - and what if there's wind blowing instead of the car moving?
jan 15 at 20:59
5
Why does my natural whistle have a maximum volume
nov 26 at 12:49
5
Does the equivalence principle mean that the Earth is expanding?
nov 14 at 0:35
4
How does my hand amplify an FM radio signal?
may 10 at 15:01
4
If there was a black hole on earth, what would it look like?
jan 20 at 18:13
4
Is there a finite unit of distance that we cannot divide past?
jan 19 at 22:21
4
Physics background for Quantum Mechanics
nov 18 at 22:51
4
Wave/particle duality
nov 7 at 1:06
3
Gravitational distortion of an object's diameter, at a distance,
mar 17 at 15:40
3
Reading Paul Dirac's “Principles of Quantum Mechanics”
mar 4 at 5:52
3
Can endergonic reactions occur outside of living organisms?
jan 5 at 0:49
3
Dimensionless Constants in Physics
dec 10 at 2:25
3
Could some Red and Blue shifts be the result of light passing through “dark matter”?
nov 17 at 22:13
3
How is a star's parent galaxy recognized?
nov 2 at 1:11
2
Astronomical-wavelength radio (AWR) transmissions between cosmic plasmas?
jun 3 at 0:43
2
Rotational velocity of face-on spiral galaxies using spectroscopy
apr 20 at 2:59
2
Introductory texts for functionals and calculus of variation
feb 20 at 11:46
2
How do I start learning particle physics?
dec 10 at 11:28
2
Since there are gravitational lenses, are there gravitational mirrors?
jan 25 at 13:30
2
General relativity and the microscopic/macroscopic distinction
nov 23 at 13:12
2
Application of diffraction problem!
nov 26 at 20:28
2
Help an aspiring physicists what to self-study
nov 24 at 16:46
2
Is there a “present state” of distant stars if simultaneity is relative?
nov 18 at 1:12
2
Does Earth's Rotation Affect Its Shape?
nov 24 at 7:36
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