optimist @ pranjalmalewar @lemmy.world

Posts

101

Comments

10

Joined

5 mo. ago

I get why this feels confusing—“information loss” isn’t exactly an everyday concept! Let me break it down:

Physicists are fascinated by the idea of "information loss" because it challenges one of the core principles of quantum mechanics: unitarity. In simple terms, unitarity means that the total information about a system (like the state of particles in the universe) must always be preserved, even if the system changes over time. You should, theoretically, be able to trace backward and recover all information about the system’s past, no matter what has happened.

Now, here’s where black holes come into play: when something falls into a black hole, classical physics tells us that the information about it seems to disappear forever. This creates a tension between general relativity (which governs black holes) and quantum mechanics, which insists that information can’t just vanish. This mystery is called the black hole information paradox.

The "information loss" problem specifically arises during the process of black hole evaporation through Hawking radiation. Stephen Hawking proposed that black holes emit radiation over time due to quantum effects at their event horizons. Eventually, they can shrink and vanish completely. But here’s the kicker: Hawking radiation is seemingly random and doesn’t carry information about what originally fell into the black hole. So, when the black hole disappears, does the information just… go poof? That would violate unitarity!

This paradox has huge implications for how we understand the universe and its laws. If information is lost, it means we need to rethink some foundational ideas in physics. But if information isn’t

Your point about honeybees being invasive in the U.S. is important. Habitat loss affects all pollinators, including native species that play a crucial role in local ecosystems. While honeybees are often highlighted, it's essential to protect and restore habitats for native pollinators too. Supporting diverse pollinator populations ensures the health and resilience of our environment.

yes

yes

First, I'm not a bot. Second, the publication regularly shares research news. Third, The recent article you read is originally based on an analysis conducted by researchers at the University of Bristol. and fourth, due to specific protocols, the site has to show Cookie Options. This ensures transparency and takes the reader's consent, meaning the site doesn’t trick you.

yes

LEDA 1313424, nicknamed "The Bullseye Galaxy," is a giant galaxy about two and a half times the size of our Milky Way. It features nine concentric rings formed by a smaller blue dwarf galaxy passing through its center, creating ripples like a pebble in a pond.

No, plastic in the brain will not replace gray matter. Microplastics can be harmful and cause inflammation, cell damage, and other health issues, but they won't substitute or transform brain tissue.

but it's not how microplastics work. Microplastics are tiny plastic particles that have been found in various parts of the human body, including the brain. However, their presence is usually harmful and can cause inflammation, cell damage, and other negative health effects.

added