- THIS BLOG’S GOAL IS TO COMBINE SCIENCE AND CHRISTIANITY INTO A LEARNED BELIEF RESULT.
- Momentum and energy are intricately connected to the concept of force. However, the terms energy and force are not interchangeable or synonymous. The formula for energy vs. momentum is CONNECTION to E = mc2.
- The energy-momentum relation is consistent with the
- Familiar mass-energy relation in both its interpretations: E = mc2 relates total energy E to the (total) relativistic mass m (alternatively denoted real or not). In contrast, E0 = m0c2 relates rest energy E0 to (invariant) rest mass m0.
- Energy is not made of anything. It’s a fundamental concept closely related to time. That’s because the energy represents a change in a system. Ultimately, we observe systems change over time. We’ve developed a concept called energy to account for the amount of change. This is a very convenient and valuable concept. For example, your car’s fuel energy determines how far you can drive. That is the chemical potential energy in the fuel. Similarly, with batteries, the stored energy (chemical energy) allows certain things to happen, like powering your phone for a day. Physics has three underlying concepts: forces, momentum, and energy. Electrodynamics and quantum electrodynamics. Electromagnetism is a classical field theory that is described by Maxwell’s equations. Electrodynamics then includes the Lorentz force law, which consists of the interaction of the field with charged particles. Such particles also provide the source terms in Maxwell’s equations. In this model, most people would be familiar with the electromagnetic field as a phenomenon that has some value throughout all space. Forces cause a change in a system.
An ever-changing array of force fields comes together to build our perceived reality. This field array is ever changing/Momentum is the property that is changed. Energy accounts for how much change. Force fields bind atoms together. These three concepts are axioms from which you build physics, so you can’t actually reduce these concepts any further.
- All things are triune, with binary interactive, just like the holy trinity.
- ONE UNIVERSE DOES NOT AN ETERNITY MAKE.
- ITS NOT THE PEOPLE, ITS THE EVENT.
- BYUND GOOD AND EVIL IS ONLY GOOD.
- One universe is not infinity.
- THIS BLOG’S GOAL IS TO COMBINE SCIENCE AND CHRISTIANITY INTO A LEARNED BELIEF RESULT.
- Strictly necessary; it is just helpful as an accounting tool, just as accountants are not needed but can be very useful. Ultimately, with relativity, energy, and momentum become part of the 4-momentum vector, but that’s another story.
- Why is the speed of light so small relative to the size of the universe? The speed of light plays a fundamental role in our universe’s structure and how we perceive and understand it. It is a universal constant in many critical physical theories, such as Einstein’s theory of relativity. According to this theory, the speed of light is the maximum speed at which information or matter can travel in the universe.
- When we consider the immense size of the universe, the speed of light may seem small in comparison. However, the vast distances in the universe are precisely why the speed of light is so significant. Light travels at a finite speed, so when we look at distant objects in the universe, we see them as they were in the past because of the time it takes to travel across those vast distances.
- When we add electromagnetic interactions to quantum mechanics, we introduce fields. This is done via the so-called minimal coupling Hamiltonian, where the momentum of a particle, p, is now expressed as p→ p-eA, where A is the vector potential and is also an operator. Now, we have quantum mechanics that includes a field; therefore, the wave function must consist of the field. That’s a straightforward extension of the Hilbert space, which means it’s still a quantum theory.
- In summary, while the speed of light may seem small relative to the size of the universe, it is a fundamental constant that shapes our understanding of the cosmos and plays a crucial role in
- If an observer is moving relative to the light source, they will measure the speed of light to be the same [math], but the wavelength and frequency of the light will appear different because of the Doppler effect. The time intervals between events, as measured by observers in different reference frames, will also differ. This is known as time dilation. Distances between objects, as measured by different observers, will also differ. This is known as length contraction. So, in summary, while the speed of light is a universal constant within a reference frame, it is not an absolute constant that is the same for all observers in relative motion. The measurements of space and time can vary between different inertial reference frames.
- What experiments support the principles of special relativity? The answer is the absence of a planetary atmosphere, which scatters light. There’s no atmosphere out there in the space. The Earth’s atmosphere scatters mainly blue light, so you see a blue sky during the day.
- When Bob returns to Earth after his high-speed journey, he will be younger than Alice. The difference in their ages is because of the time dilation effect experienced by Bob during his high-speed trip. This practical example illustrates how, as Einstein’s theory of special relativity predicted, time can pass at different rates for two observers in relative motion.
- The faster you travel relative to another observer, the greater the time dilation effect. The effect is negligible at everyday speeds, but it becomes significant at speeds approaching the speed of light.
- This counterintuitive phenomenon has been experimentally verified many times, for example, by comparing the aging of atomic clocks on Earth versus those on high-speed aircraft. Time dilation is crucial to our modern understanding of space, time, and the universe.
- It’s unfathomable how ridiculously enormous that star is! It’s so huge that its radius is comparable to that of the orbit of Jupiter. The orbit of Jupiter.
- If this big, beautiful bastard replaced Uranus (heh), not only would we be destroyed,
- What happens with the photons when an atom absorbs them? Are they destroyed? They are gone once they’re absorbed. The energy isn’t gone; it leaves the photon field and enters the electron/positron field. And when it leaves the photon field, that photon no longer exists—the presence of the energy in the photon field was the photon.
- Eventually, that electron will return to a lower energy state—corresponding to energy leaving the electron/positron field. And it goes into the photon field, and what I regard as a new photon is created. But whether you consider it as the same photon might be a matter of convention—to me, it makes sense to think of it as a new one, precisely so you don’t have to ask yourself what the situation with “that” photon was while the energy was off in another field.
- A photon’s only existence is the energy in the photon field. We sometimes perceive that as something localized in some particular region of space, but that’s just a way of looking at it. It’s best to think directly about the quantum fields and the energy in the modes of those fields.
