Recent content by rrosenthal

To ModusPwnd-----thank you for your reply. However is you are stationary to the flow of electrons IN VACUUM, would you then see the magnetic field--?---r rosenthal

An electric current going through a wire generates a magnetic field as per the right hand rule. Will a pencil stream of electrons traveling in a vacuum at near light speed also generate a magnetic field--??----Also, what would a hypothetical observer traveling at the same speed and direction as...

any idea what wavelength the photon would be that would mediate the electrostatic repulsion----?---randy rosenthal

Is the repulsive force between 2 electrons---(as in an electrostatic situation)---mediated by a photon----?------R Rosenthal

rather than get caught up in semantics, let me rephrase the question. A stream of electrons moving from left to right induces a magnetic field in a specific configeration. Would a stream of protons--also moving from left to right--also induce a magnetic field and would this be of opposite or...

Quick question. With electric current flow thru wire, the "right hand" rule indicates direction and position of the induced magnetic field. With a flow of protons in one direction, would a magnetic field be induced, and would a "left hand" rule be appropriate to describe this magnetic field...

Question regarding dark energy and accelerated expansion. If gravitational force were somehow diminished at large distances----ie lower gravitational constant at huge distances--might this explain the increase or accelerated expansion seen. If this were true, would it be necessary to evoke a...

In medicine and biology they have Medline which is a complete database of research papers---kind of a complete search engine of research papers in medicine and biology---which has free access to public. Is there anything comparable to this in physics---...

Somewhat of a rudimentary question. Not sure it belongs in the QM forum-----2 electrons--one on left----one on right----1 cm apart. A repulsive force exists betw the two. Now a 3rd electron is brought in on left. Will this increase the repulsive force on the electron on the right----or to feel...

electron energy shells--where do they come from A quick question. Not an expert in physics, so my question will be rudimentary.-----An isolated electron and proton are traveling in space. As they approach each other, a hydrogen atom is formed. My question----what keeps the electron from...

I am less than a novice regarding electronic issues and understanding circuits , and need help in terms of seeking a component. I am looking for a solid state component---?? ic--- that would act as a SPST switch. This switching device would be inserted into a simple dc circuit--( approx 10-15...

Am I wrong, or is the only evidence of an expanding universe the red shift---? r rosenthal

Read the article you gave me. I have 2 comments---1st---"gravitational" redshift quoted in the article sounds like another version of the "tired light" hypothesis in the sense that red shift observed--(as a result of passing thru gravitational fields) is still --it seems to me--a function of...

The idea that distant objects are receeding from us and thereby producing a proportional redshift --seems to be a fundamental tenant in terms of current cosmological thinking and theory. There have been alternate ideas proposed in the past including the tired light hypothesis-(whereby light...

Tnx for the info----merry xmas----RR