
https://bigthink.com/starts-with-a-bang/...-universe/
EXCERPTS: Quantum physics is one of the most bizarre and counterintuitive physical theories that describe our Universe, defying our intuition and common experience about the properties of all particles: massive and massless alike. From Heisenberg uncertainty to wave-particle duality to bizarre experiments like the dual slit or Stern-Gerlach, a slew of quantum phenomena rear their heads every time we try to “know too much” about the Universe at once. But even in the absence of observers who exquisitely attempt to measure these properties, the Universe remains fundamentally quantum in nature. Here are some ideas to help you come to terms with our quantum Universe.
[...] Sure, there are plenty of other everyday effects that are inherently quantum ... If you can remember just one aspect of quantum physics however, take away this: all the various quanta in the Universe may interact like particles, but they propagate like waves, including by overlapping, by superimposing atop one another, and by interfering. Once you understand that everything that exists has wave-like properties, you’ve begun to accept the most important — and arguably, the weirdest — aspect of our quantum Universe... (MORE - missing details)
EXCERPTS: Quantum physics is one of the most bizarre and counterintuitive physical theories that describe our Universe, defying our intuition and common experience about the properties of all particles: massive and massless alike. From Heisenberg uncertainty to wave-particle duality to bizarre experiments like the dual slit or Stern-Gerlach, a slew of quantum phenomena rear their heads every time we try to “know too much” about the Universe at once. But even in the absence of observers who exquisitely attempt to measure these properties, the Universe remains fundamentally quantum in nature. Here are some ideas to help you come to terms with our quantum Universe.
[...] Sure, there are plenty of other everyday effects that are inherently quantum ... If you can remember just one aspect of quantum physics however, take away this: all the various quanta in the Universe may interact like particles, but they propagate like waves, including by overlapping, by superimposing atop one another, and by interfering. Once you understand that everything that exists has wave-like properties, you’ve begun to accept the most important — and arguably, the weirdest — aspect of our quantum Universe... (MORE - missing details)