tech99's latest activity
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tech99 reacted to Nugatory's post in the thread High School A question about the rotation of points on a wheel with
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That one confused me for a moment, and then I realized why it had to be specifically a "train" wheel - the flange extends below the... -
tech99 replied to the thread Copper piping and cathodic protection?.I suspect that providing cathodic protection to the interior of pipes is problematic, because the current will tend to flow locally... -
tech99 replied to the thread Copper piping and cathodic protection?.I would be concerned about the toxicity of zinc. -
tech99 replied to the thread Why does the base of the stapes (oval window) have a lower amplitude in the middle ear?.I saw your question and do not know how to reply directly to you. The lever arrangement appears to give a step down in amplitude from... -
tech99 replied to the thread Limitations of the CQMI method to assess causality of s-parameters.I think the underlying issue you have is that you need to undo the embedded test fixture parameters from your overall measured... -
tech99 replied to the thread Why does the base of the stapes (oval window) have a lower amplitude in the middle ear?.You ask about pressure or force at the oval window. In a fluid we have pressure and in a system of levers we have force. In hydraulics... -
tech99 reacted to DrBanana's post in the thread Why does the base of the stapes (oval window) have a lower amplitude in the middle ear? with
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Textbooks: 1. Guyton and Hall Textbook of Medical Physiology, 14th edition: " “Impedance Matching” by the Ossicular System: The... -
tech99 replied to the thread Engineering Voltage across inductor is somehow negative despite diodes?.An inductor has a property of inertia, analogous to a mass. So when we try to alter the conditions, it will oppose the change. If we try... -
tech99 reacted to Arne Andersen's post in the thread Affordable way to remove potassium from off-grid water? with
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Ion exchange is the best way to remove potassium (and other ions). The technique is widely used to improve "hard water". In this case... -
tech99 replied to the thread Undergrad The effect of a radio wave on an electron.Yes I agree with that but the initial question seems to be about just the effect of an EM wave on an electron in a plasma and does not... -
tech99 replied to the thread Undergrad The effect of a radio wave on an electron.Yes agree. Disregarding Earth's magnetic field, I think the electron in the ionosphere will have simple harmonic motion which is greater... -
tech99 replied to the thread Undergrad The effect of a radio wave on an electron.This is my simple thinking on the topic. If I consider the ionosphere as a conductor, then neglecting Earth's magnetic field, the... -
tech99 replied to the thread Undergrad The effect of a radio wave on an electron. -
tech99 replied to the thread Undergrad The effect of a radio wave on an electron.Maybe I miss the point of this discussion, but I cannot understand how an EM wave can induce a direct current in the ionosphere. EM...