Negative time officially exists.
Quantum
physicists have officially measured "negative time," observing light
particles exiting a material before they even entered.
In a
mind-bending experiment at the University of Toronto, researchers fired photons
through a dense cloud of ultra-cold rubidium atoms. While light usually
experiences a slight delay when passing through matter, the team discovered a
rare phenomenon where photons appeared to spend less than zero time inside the
cloud. By using a "weak measurement" technique to observe the
particles without disrupting their quantum state, the scientists confirmed that
the light pulses effectively exited the atomic cloud before they had even
finished entering it.
This
"negative time" effect doesn't mean we have discovered a path to time
travel, but it does expose the strange, non-linear nature of reality at the
subatomic scale. According to the laws of quantum mechanics, events do not
always follow a strict chronological order of cause and effect. This discovery
challenges our fundamental perception of how time flows, proving that at the
smallest levels of the universe, the boundaries between "before" and
"after" can become remarkably blurred.
source:
Sinclair, J. Physicists have measured ‘negative time’ in the lab. The
Conversation.
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