tech99's latest activity
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tech99 replied to the thread Undergrad How to make a theoretical model of a Blackburn pendulum more realistic.I presume from a theoretical standpoint that the rotation of Earth will cause the paper to move relative to the pendulum, as per the... -
tech99 replied to the thread Mounting an antenna for aircraft and marine listening.I think you were better off as you were. The signal strength at VHF falls off very rapidly with distance, and you cannot easily get...
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tech99 replied to the thread Undergrad Are the space and time parts of a standing wave in 3D separable?.It appears to me that a standing wave may be defined as a wave where there is no net flow of energy. For there to be no net flow of...
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tech99 replied to the thread Undergrad Young's slits with incandescent light source.I can remember at school doing the double slit experiemnt using sodium light from a sodium salt placed in a Bunsen flame together with...
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tech99 replied to the thread High School What Medium Does Light Travel Through in Space?.Maxwell noticed that the "cgs" units of permittivity and permeability were related by a number equal to the speed of light. So that the...
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tech99 reacted to hokhani's post in the thread Undergrad Radiation in classical and quantum mechanics with
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From classical view, even in a stationary state of an atom electrons have acceleration and they must radiate. -
tech99 replied to the thread High School Conclusions from Thomson’s cathode ray tube experiment.It seems that they did know that charge flowed in a circuit. Thompson himself tries to measure charge by the time it takes to accumulate...
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tech99 replied to the thread Great circle between two points on the Earth's surface.Not sure here but are you assuming that latitude is a great circle?
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tech99 replied to the thread High School Why the bottom of a rolling wheel has zero velocity.Is this definition universal, so it will hold if the wheel has a flange protruding below the contact surface, as on a train?