Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Specular Holography: How (2010)

zintaglio.com

Post reply on HN
Print view View original

1–10 of 15 posts

Re: Specular Holography: How (2010)

#2

Post by _Microft »

This is light on details if I haven’t missed a link to another page or something.

Definitely browse the links to the images in the „See:“ section of the submitted page though - the images and videos on the knots and nature pages are beautiful!

Maybe there are useful references in the Wikipedia article:

https://en.m.wikipedia.org/wiki/Specular_holography

Edit: maybe this, even though the page is awful to use on mobile: http://amasci.com/amateur/holohint.html

Re: Specular Holography: How (2010)

#3

Post by Nition »

When I was a kid in the 90s my parents took me to some sort of art gallery hidden upstairs above other shops, that was doing a hologram exhibition (wavefront holograms, not specular ones like in this article). It was dark inside and they had a whole lot of amazing large format holograms of various things lit up.

I kind of wonder why holograms of all types aren't more popular. It's still amazing to see a 3D image on a 2D plane that you can look at from different angles.

Re: Specular Holography: How (2010)

#6

Post by sbierwagen »

Nition wrote: post #3

When I was a kid in the 90s my parents took me to some sort of art gallery hidden upstairs above other shops, that was doing a hologram exhibition (wavefront holograms, not specular ones like in this article). It was dark inside and they had a whole lot of amazing large format holograms of various things lit up. I kind of wonder why holograms of all types aren't more popular. It's still amazing to see a 3D image on a…

I spent ten minutes the other day trying to buy any laser hologram, and as far as I can tell the market just does not exist at all outside of "call us" pricing for science museums and such. Also doesn't help that the word "hologram" has been watered down to uselessness by competing technologies.

Re: Specular Holography: How (2010)

#7

Post by deanputney »

sbierwagen wrote: post #6
Nition wrote: post #3

When I was a kid in the 90s my parents took me to some sort of art gallery hidden upstairs above other shops, that was doing a hologram exhibition (wavefront holograms, not specular ones like in this article). It was dark inside and they had a whole lot of amazing large format holograms of various things lit up. I kind of wonder why holograms of all types aren't more popular. It's still amazing to see a 3D image on a…

I spent ten minutes the other day trying to buy any laser hologram, and as far as I can tell the market just does not exist at all outside of "call us" pricing for science museums and such. Also doesn't help that the word "hologram" has been watered down to uselessness by competing technologies.

Ten minutes! Wow.

Did you check eBay? There are definitely examples for sale there. Holography-specific groups have hints on where to buy some too. The popular ones are hard to find, but you can make them yourself at home or find less sophisticated pieces for sale occasionally.

Re: Specular Holography: How (2010)

#8

Post by Nition »

sbierwagen wrote: post #6
Nition wrote: post #3

When I was a kid in the 90s my parents took me to some sort of art gallery hidden upstairs above other shops, that was doing a hologram exhibition (wavefront holograms, not specular ones like in this article). It was dark inside and they had a whole lot of amazing large format holograms of various things lit up. I kind of wonder why holograms of all types aren't more popular. It's still amazing to see a 3D image on a…

I spent ten minutes the other day trying to buy any laser hologram, and as far as I can tell the market just does not exist at all outside of "call us" pricing for science museums and such. Also doesn't help that the word "hologram" has been watered down to uselessness by competing technologies.

Yep exactly, that's my experience as well. And I think the other reply saying it's possible to find them on eBay is kind of missing the point. Anywhere you can buy them is kind of obscure or unofficial.

I don't understand why something so cool, that keeps working forever, is so relatively rare.

I think the only other one I've seen in the wild since that exhibition in the 90s that wasn't some tiny thing, was a Lord Of The Rings one that Weta Workshop had given to a lecturer of mine.

Re: Specular Holography: How (2010)

#10

Post by agumonkey »

_Microft wrote: post #2

This is light on details if I haven’t missed a link to another page or something. Definitely browse the links to the images in the „See:“ section of the submitted page though - the images and videos on the knots and nature pages are beautiful! Maybe there are useful references in the Wikipedia article: https://en.m.wikipedia.org/wiki/Specular_holography Edit: maybe this, even though the page is awful to use on mobile…

early dent-oriented shaders
Post reply on HN