Science General Discussion

[Xevross]

Its quite clearly a Martian spider.

[darkknightkryta]

Did Stephen Hawking Just Solve Black Holes' Information Paradox? | Nerdist

Holograms!  Why didn't anyone think of this sooner?

[Legend]

Did Stephen Hawking Just Solve Black Holes' Information Paradox? | Nerdist

Holograms!  Why didn't anyone think of this sooner?

I doubt the holographic principle, much less string theory as a whole, is correct.

It's been around far too long without gaining any experimental evidence to back it up. The standard model only took 12 years to get confirmed. String theory is approaching 50 years of nothing but math.

[darkknightkryta]

I doubt the holographic principle, much less string theory as a whole, is correct.

It's been around far too long without gaining any experimental evidence to back it up. The standard model only took 12 years to get confirmed. String theory is approaching 50 years of nothing but math.

String theory is hard to prove since we live in 4 dimensions...  I personally think subatomic particles existing in greater dimensions is correct.

[Legend]

String theory is hard to prove since we live in 4 dimensions...  I personally think subatomic particles existing in greater dimensions is correct.

Well if the holographic theory is correct, we'd live in 2 dimensions  

[the-pi-guy]

Well if the holographic theory is correct, we'd live in 2 dimensions  

Nah, imagine this 3 dimensional fly getting smushed by my hand/gravity against this sheet of paper getting pressed into a 2D fly.  

Or something...

[darkknightkryta]

Well if the holographic theory is correct, we'd live in 2 dimensions  

Not sure about the holographic theory .  Though I recall learning in my grade 12 Physics class that we don't quite understand how holograms work.  You can take one, cut it in half, and it'd retain the full image.  Like, we know how to make them, we don't know how they work.

[Legend]

Nah, imagine this 3 dimensional fly getting smushed by my hand/gravity against this sheet of paper getting pressed into a 2D fly.  

Or something...

Haha that's an ELI5 answer if I've ever seen one.

Not sure about the holographic theory .  Though I recall learning in my grade 12 Physics class that we don't quite understand how holograms work.  You can take one, cut it in half, and it'd retain the full image.  Like, we know how to make them, we don't know how they work.

The holographic principle is named after laser holograms but it's not really based off the physics behind them.

Traditional holograms are really well understood. They're just the interference pattern between a coherent light source/laser after being split and having one half bounced off an object. Shining an identical light back through the interference pattern simple recreates the other beam. In the modern computer age, these interference patterns can be calculated for 3D models and directly printed on glass.

The "cut in half" phrase is often stated but I've always found it misleading. It still destroys half of the interference pattern and half of the information about the object. A better analogy is that holograms are like windows. If you cut the window in half you can still see the entire scene through it, but your view is now restricted to a smaller area. So for example if you have a hologram of a 2d object right up against the glass, it acts exactly like a traditional picture. Cut it in half and half of the 2D object is gone forever.

[darkknightkryta]

Haha that's an ELI5 answer if I've ever seen one.
The holographic principle is named after laser holograms but it's not really based off the physics behind them.

Traditional holograms are really well understood. They're just the interference pattern between a coherent light source/laser after being split and having one half bounced off an object. Shining an identical light back through the interference pattern simple recreates the other beam. In the modern computer age, these interference patterns can be calculated for 3D models and directly printed on glass.

The "cut in half" phrase is often stated but I've always found it misleading. It still destroys half of the interference pattern and half of the information about the object. A better analogy is that holograms are like windows. If you cut the window in half you can still see the entire scene through it, but your view is now restricted to a smaller area. So for example if you have a hologram of a 2d object right up against the glass, it acts exactly like a traditional picture. Cut it in half and half of the 2D object is gone forever.

I know.  I was just saying, or rather my teacher, that holograms contain all information at every part of the hologram.  Which is why the full image will be on two halves.  You can even quarter it, all quarters will retain all information.

[Legend]

I know.  I was just saying, or rather my teacher, that holograms contain all information at every part of the hologram.  Which is why the full image will be on two halves.  You can even quarter it, all quarters will retain all information.

I'm saying that's wrong.

[darkknightkryta]

I'm saying that's wrong.

Probably.  That was a long time ago.

[Legend]

Probably.  That was a long time ago.

Haha yeah holography is one of my hobbies. Hoping to buy a VizionEck hologram after it releases.

[darkknightkryta]

Haha yeah holography is one of my hobbies. Hoping to buy a VizionEck hologram after it releases.

Why don't you put in a hologram mode, where everything looks holographic.  Charge 1 dollar for the mode.  Then give me 50 cents for every sale

[Legend]

Video of Pluto Flyover by NASA's New Horizons

[Legend]