Space and time when used to describe events can't be clearly separated. Therefore, space and time are woven together in a symbiotic manner. Having one without the other has no meaning in our physical world. To be redundant, without space, time would be useless to us and without time, ...
When we measure the speed of a car, we seem to be measuring speed with something abstract called time; we are actually just comparing a known motion (of the sun) with an unknown motion of the car. Time is a way to compare or describe different kinds of motions like the speed of light...
In addition, the theoretical work of James Clerk Maxwell and Hendrik Lorentz established that electric andmagneticforces behaved as fields that exert force on point charges. These were summarized inMaxwell’s Equations(1861-62) and theLorentz Force Law(1895), which describe howelectricandmagnetic fi...
To me, these are akin to saying "the work done by the force" is [represented by] the "area under the force-vs-displacement graph".I think what Minkowski's reformulation and reinterpretation does is to reveal to folks a somewhat familiar structure [that one has to get used to] to give...
Thus, in the case of the measurement of the surface temperature of a star the observer does not move within the thermodynamic context of the star, so that the temperature may be determined using Wien’s law, which relates the wavelength of the emission maximum of a black body and its tempe...
If we were to run a quantum-physics simulation every time we flash an LED, we would never get anything done. Yet, many of these shortcuts and rules-of-thumb were created in times past , when the electronics industry was radically different than what it is now. ...
Types of PCBs In the previous section, I focused on typical PCBs that are assembled on rigid substrates as these are the most common. However, there are other types of circuit boards that are constructed on a range of possible materials. The common types of these are: ...
“The external field effect is a unique signature of MOND that does not occur in Newton-Einstein gravity,” McGaugh said. “This has no analogy in conventional theory with dark matter. Detection of this effect is a real head-scratcher.” ...
important role it plays in physics, astronomy and cosmology. Put simply, light moves at incredible speeds and is the fastest moving thing in the Universe. Its speed is considered a constant and an unbreakable barrier, and is used as a means of measuring distance. But just how fast does it...
The exception is things like electrical wires. There’s an equal amount of positive and negative charge in the wires, so the magnetic force is all that’s left. But this all begs the question; how fast do the particles have to be moving so that the magnetic field they generate to pull...