Orad Reshef
@oradr.bsky.social
🇨🇦 Scientist and Entrepreneur working in #photonics • previously @McGill, @Harvard, @uOttawa • 🏳️🌈🏳️⚧️ ally
Reposted by Orad Reshef
1/ Rainer Weiss, who conceived of the idea of a gravitational wave detector (which eventually became LIGO), has died.
I was at MIT when the first gravitational wave detection was announced, and he gave perhaps the most inspiring colloquium I have ever heard.
news.mit.edu/2025/profess...
I was at MIT when the first gravitational wave detection was announced, and he gave perhaps the most inspiring colloquium I have ever heard.
news.mit.edu/2025/profess...
Professor Emeritus Rainer Weiss, influential physicist who forged new paths to understanding the universe, dies at 92
MIT Professor Emeritus Rainer Weiss, a renowned experimental physicist and Nobel laureate whose groundbreaking work on the Laser Interferometer Gravitational-Wave Observatory (LIGO) confirmed a longst...
news.mit.edu
September 8, 2025 at 5:21 PM
1/ Rainer Weiss, who conceived of the idea of a gravitational wave detector (which eventually became LIGO), has died.
I was at MIT when the first gravitational wave detection was announced, and he gave perhaps the most inspiring colloquium I have ever heard.
news.mit.edu/2025/profess...
I was at MIT when the first gravitational wave detection was announced, and he gave perhaps the most inspiring colloquium I have ever heard.
news.mit.edu/2025/profess...
Reposted by Orad Reshef
🏆 SPIE Maria Goeppert Mayer Award in Photonics: Pavel Cheben, NRC Canada, Principal Research Officer
For pioneering contributions to silicon photonic waveguide devices, including the invention of metamaterial waveguides + advancing sub-wavelength integrated #photonics tech. spie.org/news/pavel-c...
For pioneering contributions to silicon photonic waveguide devices, including the invention of metamaterial waveguides + advancing sub-wavelength integrated #photonics tech. spie.org/news/pavel-c...
Pavel Cheben: The 2025 SPIE Maria Goeppert Mayer Award in Photonics
For pioneering contributions to silicon photonic waveguide devices, including the invention of metamaterial waveguides and advancing sub-wavelength integrated photonics technology
spie.org
January 9, 2025 at 6:55 PM
🏆 SPIE Maria Goeppert Mayer Award in Photonics: Pavel Cheben, NRC Canada, Principal Research Officer
For pioneering contributions to silicon photonic waveguide devices, including the invention of metamaterial waveguides + advancing sub-wavelength integrated #photonics tech. spie.org/news/pavel-c...
For pioneering contributions to silicon photonic waveguide devices, including the invention of metamaterial waveguides + advancing sub-wavelength integrated #photonics tech. spie.org/news/pavel-c...
How can quantum entanglement be instantaneous (so, “faster” than the speed of light) while also not violating causality?
John Bell gave a classic analogy: "When the Queen dies in London, the Prince of Wales, lecturing in Australia, becomes instantaneously King".
John Bell gave a classic analogy: "When the Queen dies in London, the Prince of Wales, lecturing in Australia, becomes instantaneously King".
January 3, 2025 at 1:05 AM
How can quantum entanglement be instantaneous (so, “faster” than the speed of light) while also not violating causality?
John Bell gave a classic analogy: "When the Queen dies in London, the Prince of Wales, lecturing in Australia, becomes instantaneously King".
John Bell gave a classic analogy: "When the Queen dies in London, the Prince of Wales, lecturing in Australia, becomes instantaneously King".
TIL that the no-hair theorem actually hasn't been fully proven quite yet. It has in some limited cases, and even in the case of gravity without electromagnetism, it has only been partially resolved.
en.wikipedia.org/wiki/No-hair...
en.wikipedia.org/wiki/No-hair...
No-hair theorem - Wikipedia
en.wikipedia.org
December 18, 2024 at 11:44 PM
TIL that the no-hair theorem actually hasn't been fully proven quite yet. It has in some limited cases, and even in the case of gravity without electromagnetism, it has only been partially resolved.
en.wikipedia.org/wiki/No-hair...
en.wikipedia.org/wiki/No-hair...
Haven’t mentioned it publicly, but I’m looking for my next job!
Please reach out if you hear of any interesting opportunities. You can learn more about who I am and what I can do at my portfolio site:
reshef.ca
Please reach out if you hear of any interesting opportunities. You can learn more about who I am and what I can do at my portfolio site:
reshef.ca
Orad Reshef | Nanophotonics, metamaterials and nonlinear optics reshef.ca – Orad Reshef | Nanophotonics, metamaterials and nonlinear optics
reshef.ca
December 12, 2024 at 1:17 PM
Haven’t mentioned it publicly, but I’m looking for my next job!
Please reach out if you hear of any interesting opportunities. You can learn more about who I am and what I can do at my portfolio site:
reshef.ca
Please reach out if you hear of any interesting opportunities. You can learn more about who I am and what I can do at my portfolio site:
reshef.ca
Reposted by Orad Reshef
#Polaritons enable high performance angle-independent optical filters. Immensely enjoyed this collaboration between
@thegatherlab.bsky.social, the Vandewal group at UHasselt and University of St Andrews
rdcu.be/d2hUo
@thegatherlab.bsky.social, the Vandewal group at UHasselt and University of St Andrews
rdcu.be/d2hUo
December 4, 2024 at 9:44 AM
#Polaritons enable high performance angle-independent optical filters. Immensely enjoyed this collaboration between
@thegatherlab.bsky.social, the Vandewal group at UHasselt and University of St Andrews
rdcu.be/d2hUo
@thegatherlab.bsky.social, the Vandewal group at UHasselt and University of St Andrews
rdcu.be/d2hUo
A great video on extreme nonlinear optics and the GZK limit (?), featured on the xkcd youtube channel.
What if we shined collimated gamma ray bursts on to the moon?
www.youtube.com/watch?v=jgaf...
What if we shined collimated gamma ray bursts on to the moon?
www.youtube.com/watch?v=jgaf...
But what if we tried MORE power?
YouTube video by xkcd's What If?
www.youtube.com
December 4, 2024 at 9:14 PM
A great video on extreme nonlinear optics and the GZK limit (?), featured on the xkcd youtube channel.
What if we shined collimated gamma ray bursts on to the moon?
www.youtube.com/watch?v=jgaf...
What if we shined collimated gamma ray bursts on to the moon?
www.youtube.com/watch?v=jgaf...
Reposted by Orad Reshef
Frequency conversion using approaches different from conventional nonlinearities opens the door to working with low-intensity incoherent light, perhaps eventually as slow as nightglow at night
Fun and rewarding collaboration between UW-Madison, Stanford, and Argonne arxiv.org/abs/2411.18707
Fun and rewarding collaboration between UW-Madison, Stanford, and Argonne arxiv.org/abs/2411.18707
December 2, 2024 at 7:15 PM
Frequency conversion using approaches different from conventional nonlinearities opens the door to working with low-intensity incoherent light, perhaps eventually as slow as nightglow at night
Fun and rewarding collaboration between UW-Madison, Stanford, and Argonne arxiv.org/abs/2411.18707
Fun and rewarding collaboration between UW-Madison, Stanford, and Argonne arxiv.org/abs/2411.18707
Mindblowing that we invented this word, and now it's part of the sum of human knowledge 💡
December 1, 2024 at 11:52 PM
Mindblowing that we invented this word, and now it's part of the sum of human knowledge 💡
Reposted by Orad Reshef
At the University of Franche-Comté, some incredible holograms were made in the 1970s. Here is a photo of one with some well-known characters, but have a good look at the right hand photo. Aside from the shadows, what beautiful ray-optics process is being accurately recorded by the hologram?
November 30, 2024 at 8:51 AM
At the University of Franche-Comté, some incredible holograms were made in the 1970s. Here is a photo of one with some well-known characters, but have a good look at the right hand photo. Aside from the shadows, what beautiful ray-optics process is being accurately recorded by the hologram?
Reposted by Orad Reshef
On the bright side, you will instantly see when it’s broken…
November 27, 2024 at 6:08 PM
On the bright side, you will instantly see when it’s broken…
Lots of new people joining Bluesky and following me!
I’m happy to follow most of you back… you should at the very least complete your profile and maybe make one post with a general introduction so I know who you are. Most people won’t follow empty accounts back ¯\_(ツ)_/¯
I’m happy to follow most of you back… you should at the very least complete your profile and maybe make one post with a general introduction so I know who you are. Most people won’t follow empty accounts back ¯\_(ツ)_/¯
November 28, 2024 at 1:26 PM
Lots of new people joining Bluesky and following me!
I’m happy to follow most of you back… you should at the very least complete your profile and maybe make one post with a general introduction so I know who you are. Most people won’t follow empty accounts back ¯\_(ツ)_/¯
I’m happy to follow most of you back… you should at the very least complete your profile and maybe make one post with a general introduction so I know who you are. Most people won’t follow empty accounts back ¯\_(ツ)_/¯
Reposted by Orad Reshef
This clip is mindblowing. What we used to do to simulate things before modern computers!
#ITeachPhysics 🎢
youtu.be/foB9vjgdDjs?...
#ITeachPhysics 🎢
youtu.be/foB9vjgdDjs?...
The Ideal Gas Law
YouTube video by Archive UK tv
youtu.be
November 23, 2024 at 10:02 PM
This clip is mindblowing. What we used to do to simulate things before modern computers!
#ITeachPhysics 🎢
youtu.be/foB9vjgdDjs?...
#ITeachPhysics 🎢
youtu.be/foB9vjgdDjs?...
Reposted by Orad Reshef
Scientists, when do we start lobbying for #Bluesky to implement native LaTeX support?
#science #physics #mathematics
🧪⚛️
#science #physics #mathematics
🧪⚛️
November 22, 2024 at 7:14 AM
Scientists, when do we start lobbying for #Bluesky to implement native LaTeX support?
#science #physics #mathematics
🧪⚛️
#science #physics #mathematics
🧪⚛️
Reposted by Orad Reshef
The founders of the Photonic Online Meeting #POM since 2019 are reunited on 🦋 @mickeykats.bsky.social @drarmani.bsky.social @riccard0.bsky.social @sylvaingigan.bsky.social @oradr.bsky.social and last but not least @igordownunder.bsky.social 💡Hello everyone! 📍https://photonicsonlinemeetup.org/
November 21, 2024 at 7:12 AM
The founders of the Photonic Online Meeting #POM since 2019 are reunited on 🦋 @mickeykats.bsky.social @drarmani.bsky.social @riccard0.bsky.social @sylvaingigan.bsky.social @oradr.bsky.social and last but not least @igordownunder.bsky.social 💡Hello everyone! 📍https://photonicsonlinemeetup.org/
lol wut? I thought threads was enormous
November 19, 2024 at 10:34 PM
lol wut? I thought threads was enormous
Reposted by Orad Reshef
There it is: TYPES OF PHOTONICS PAPER (2021).
What deserves to be added from the last 3 years?
What deserves to be added from the last 3 years?
November 17, 2024 at 6:56 PM
There it is: TYPES OF PHOTONICS PAPER (2021).
What deserves to be added from the last 3 years?
What deserves to be added from the last 3 years?
Reposted by Orad Reshef
At lunch, we were chuckling over the many scientific papers in which the experimental setup figure, made in 3D rendering software, had a laser that cast a shadow. Light doesn’t cast a shadow of course!
… so we made it cast one!
Work done at uOttawa along with the Boyd group
… so we made it cast one!
Work done at uOttawa along with the Boyd group
Light can cast a shadow: bit.ly/3Z3nSYn
It may sound like a riddle, but a research team proved that under certain circumstances, a #laser beam can act like an opaque object to cast a shadow.
The effect is visible to the naked eye, with the shadow following the beam without observable delay. 🧪⚛️💡
It may sound like a riddle, but a research team proved that under certain circumstances, a #laser beam can act like an opaque object to cast a shadow.
The effect is visible to the naked eye, with the shadow following the beam without observable delay. 🧪⚛️💡
November 16, 2024 at 3:02 AM
At lunch, we were chuckling over the many scientific papers in which the experimental setup figure, made in 3D rendering software, had a laser that cast a shadow. Light doesn’t cast a shadow of course!
… so we made it cast one!
Work done at uOttawa along with the Boyd group
… so we made it cast one!
Work done at uOttawa along with the Boyd group
Reposted by Orad Reshef
Hello Bluesky optics/photonics/quantum people! We've packed up and moved on over here. Next week we'll start sharing our articles here. Happy weekend!
November 15, 2024 at 11:01 PM
Hello Bluesky optics/photonics/quantum people! We've packed up and moved on over here. Next week we'll start sharing our articles here. Happy weekend!
Congrats to Jeff and all his group members! I remember first discussing this over lunch when I was still at uO. So cool to see they finally succeeded!
Light can cast a shadow: bit.ly/3Z3nSYn
It may sound like a riddle, but a research team proved that under certain circumstances, a #laser beam can act like an opaque object to cast a shadow.
The effect is visible to the naked eye, with the shadow following the beam without observable delay. 🧪⚛️💡
It may sound like a riddle, but a research team proved that under certain circumstances, a #laser beam can act like an opaque object to cast a shadow.
The effect is visible to the naked eye, with the shadow following the beam without observable delay. 🧪⚛️💡
November 14, 2024 at 8:22 PM
Congrats to Jeff and all his group members! I remember first discussing this over lunch when I was still at uO. So cool to see they finally succeeded!
Reposted by Orad Reshef
So, I haven't seen any of the video and maybe I was completely cut... But the first episode is tonight!
The topics are amazing! 💡🧪
www.pbs.org/wgbh/nova/se...
The topics are amazing! 💡🧪
www.pbs.org/wgbh/nova/se...
Building Stuff
Humans are the most innovative species on Earth. See how engineers are supercharging our abilities, reaching beyond our horizons, and altering our environment.
www.pbs.org
November 14, 2024 at 1:15 AM
So, I haven't seen any of the video and maybe I was completely cut... But the first episode is tonight!
The topics are amazing! 💡🧪
www.pbs.org/wgbh/nova/se...
The topics are amazing! 💡🧪
www.pbs.org/wgbh/nova/se...
For those of you who have been around bsky for a while, it’s worth your wild to try the Sky Follower Bridge again. There’s way more people to re-follow from Twitter
November 13, 2024 at 7:50 PM
For those of you who have been around bsky for a while, it’s worth your wild to try the Sky Follower Bridge again. There’s way more people to re-follow from Twitter
Reposted by Orad Reshef
Remember the #nanohole array from yesterday? Well sometimes, #nanoholes are a first step into creating #nanopillars using a classic #nanofabrication trick, image conversation.
November 13, 2024 at 9:18 AM
Remember the #nanohole array from yesterday? Well sometimes, #nanoholes are a first step into creating #nanopillars using a classic #nanofabrication trick, image conversation.
Reposted by Orad Reshef
I photographed a laser in a dusty room ...
November 12, 2024 at 10:40 AM
I photographed a laser in a dusty room ...
It’s so hard not to be cynical
November 11, 2024 at 11:11 PM
It’s so hard not to be cynical