I figured this out myself It is not the transition of the electron per se that is knocked out of the valence shell that generates the Ca K emission line.
My question relates to the physics of the emission line of Ca II which originates in the solar chromosphere. My understanding is that ionized Ca which lacks a single electron in its valence orbital interacts with free electron in the chromosphere milieu to form Ca I (nonionized). The captured...
Thanks all. I think I am starting to get it.
Based on responses, allow me to restate my question. Consider the receiving parabolic dish of a radio telescope and the collection radio waves of same wavelength and phase that arrive perpendicular to the vortex line. No matter where each of...
I understand that a radio telescope can be tuned to receive radio waves generated by neutral hydrogen atoms present in galactic gas, for example, within the spirals of the milky way. I think I understand that the incoming radio waves will be a mixture of red- and blue-shifted photons depending...
Thanks to the three of you for taking the time to respond to my question. They were exactly at the level that I was hoping for and greatly enhanced my understanding of this aspect of relativity.
I seem to be missing something very basic to the relationship between gravity and mass. If gravity is equivalent to acceleration, what is the basis for the acceleration that generates the gravitational force of an object such as the earth? What is accelerating? Am I even thinking about this in...
Yes, this was also my first hit. Certainly, useful, but it does not provide the inclination of the moon's orbit to the equator. I am interested in procession predictions.
Is there an on-line calculator or a table that would allow me to plug in a date (year) which would give me the moon's inclination to the plane of the equator on that date? Thanks for any help.
I use an Olll filter to view emission nebula such as the Great Nebula in Orion. What is the mechanism by which Olll in such nebula emit photons of the wavelength that passes through my filter?
I want to thank everyone for your helpful reply to my questions. George, I especially appreciate your bringing the Physics Teacher article to my attention.
How does one determine/calculate the masses, orbital period, and separation of two merging neutron stars from the characteristics of its gravity wave LIGO signal? And how does this information allow one to calculate the distance to the galaxy that housed the merger? And how can one calculate...
As we all know, seven earth-like planets have been discovered orbiting the low-mass-star TRAPPIST-1. TRAPPIST-1 is reported to be located only 12 parsecs (39 light yrs) from us. Can anyone described how this distance was determined? Thanks.
<Mentor note: Merged from a single thread to...
The impact of a bowling ball on the shape of a stretched gridded sheet is often used as a tool to help some of us to better visualize how the presence of a mass influences the curvature of spacetime? However, while this kind of diagram is helpful, I think that it is misleading because it...