This is an ebook about quantum computing made for a general audience. The ebook was made freely available via arXiv by the author Chris Ferrie, who is known for writing science books for children such as the popular Quantum Physics for Babies.
Hey, I’m having this issue only with Mander. I can’t reliably reproduce it, sometimes it’ll go days without issue. But then the insurance gets disconnected and I need to add the account again. Does not happen with my account on another instance. Anyone else experiencing the same? Any clues as to what is causing it?
Good to hear! But this one was not me. I could not figure out the root cause, and nothing of significance has changed… Hopefully whatever caused the issue does not reoccur!
Also, the one that shoots out flames paints a picture similar to how a synchrotron behaves, shooting out X-rays into the beamlines as the electron bunches move around.
Upon looking into it closer, the synchrotron is a bit of a mixture of those two concepts - the source loop (booster ring) that is fed by the linear accelerator, and then the larger loop (storage room) that feeds X-rays the beamlines. Of course, many details differ, but still it is interesting to notice the similarities !
I woke up and noticed that the server was down. I think that there were two different issues happening at once - one related to nginx, and the other related to a memory limit I recently set on a docker container. Issues are fixed now. Sorry!
From the title I thought that the UV opsin itself was also performing the pressure sensing function… Which would be fascinating to me, as I have worked with viscosity and pressure-sensitive fluorophores in the past (BODIPYs and DCDHF), and I would love to see living things making use of this molecular sensor design.
But I now see that it is a different molecular sensor that is also present in the UV sensing cell:
Our results indicate that the ciliary opsin required for detecting UV light is not essential for pressure sensation.
So, today is not the day we find pressure-sensitive fluorescent sensors in a living organism, but that is still a fascinating finding. I will have to read more about those “TRP channels”, the “ultimate integrators of sensory stimuli”. They seem like a very interesting class of bio molecules that I still know too little about 😁
Really nice work, thanks a lot for sharing it here!!
If the timing is right, I would bring a mushroom grow bag with mushrooms sprouting.
If not… probably my radiacode gamma spectrometer and some of my radioactive items. Maybe a clock with radium painted dials and a piece of trinitite. I think that there are many different points of discussion that can be of interest to a broad audience (radioactivity, spectroscopy, electronics, US labor law story of the radium girls, nuclear explosions, background radiation… etc). As a bonus I can bring a UV flash light and show the radium fluorescence. Adults love UV flash lights.
Oh wow, this would be great. I set up my XMPP server with Prosody because that seemed like the most straight forward choice. But now I wonder whether it is worth to reconsider and look into Ejabberd.
If carbon dioxide (CO2) simply absorbed energy, including sunlight, without re-emitting it, it could lead to cooling at the Earth’s surface. This is because the absorbed energy would not be radiated back to the surface, resulting in a net loss of energy from the Earth-atmosphere system.
Hmm, I don’t follow the argument. If the CO2 and other atmospheric molecules were unable to re-emit the light, they would need to dissipate the excess energy via non-radiative processes. So the main transfer of energy to the surroundings would be via collisions with other molecules. The density of molecules is greater as you approach the surface, and the density in space is very very low. So there are many more molecules to collide with that move the energy in the direction of the surface, and there is no easy pathway to get the heat out of the earth, other than hot molecules diffusing into space.
So, unless there is an important hole in my reasoning, removing the radiative pathway would ultimately result in a hotter earth because a larger percentage of the energy of light is trapped.
I think that the main problem in your comment is that it does not account for what happens to the energy that is absorbed. This energy does not disappear - you need to account for it.
The experiment showed that the CO2 gas was an efficient absorber of some form of radiant energy that came from the sun. We now know that this energy is infrared radiation. This radiation is emitted by hot bodies, and the sun emits a lot of it.
But yes, you are correct in that her experiment was not about the greenhouse effect itself - which includes more complicated interactions such as the reflection and emission of IR from the earth’s surface. But, still, the absorption of IR by CO2 is a very important component. And her observations - using the sun as the source of the infrared - is also a very relevant observation. This is because:
Infrared light can carry heat energy from one hot body to another
A large amount of the heat transfer from the sun to the earth comes in the form of infrared light
CO2, which is present in the atmosphere in a significant amount, is a strong absorber of infrared light
So I don’t think her work is irrelevant. It is very relevant. But I do think that the title “Scientists understood physics of climate change” is stretched because this experiment by itself is not enough to describe all of the complexity of the green house effect and climate change.
Attosecond spectroscopy using vacuum-ultraviolet pulses emitted from laser-driven semiconductors (arxiv.org)
What You Shouldn't Know About Quantum Computers (arxiv.org)
This is an ebook about quantum computing made for a general audience. The ebook was made freely available via arXiv by the author Chris Ferrie, who is known for writing science books for children such as the popular Quantum Physics for Babies.
Frequent disconnects from Voyager app
Hey, I’m having this issue only with Mander. I can’t reliably reproduce it, sometimes it’ll go days without issue. But then the insurance gets disconnected and I need to add the account again. Does not happen with my account on another instance. Anyone else experiencing the same? Any clues as to what is causing it?
Bizarre travelling flame discovery (youtu.be)
On-Chip Quantum Information Processing with Distinguishable Photons (journals.aps.org)
Heat flows enrich prebiotic building blocks and enhance their reactivity - Nature (www.nature.com)
The Netherlands (mander.xyz)
Exclusive: official investigation reveals how superconductivity physicist faked blockbuster results (www.nature.com)
Sorry about the downtime last night!
I woke up and noticed that the server was down. I think that there were two different issues happening at once - one related to nginx, and the other related to a memory limit I recently set on a docker container. Issues are fixed now. Sorry!
High-fidelity spin qubit operation and algorithmic initialization above 1 K - Nature (www.nature.com)
Revealing the Microscopic Mechanism of Elementary Vortex Pinning in Superconductors (arxiv.org)
The generic temperature response of large biochemical networks (arxiv.org)
Stability distillation hypothesis for the origin of life (arxiv.org)
Cage escape governs photoredox reaction rates and quantum yields - Nature Chemistry (www.nature.com)
Arboreal or terrestrial: Oviposition site of Zhangixalus frogs affects the thermal function of foam nests (onlinelibrary.wiley.com)
Link to the article: onlinelibrary.wiley.com/doi/10.1002/ece3.10926...
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What would you bring to an adult show and tell?
I don’t necessarily mean adult as in NSFW....
Matrix gateway setup with ejabberd (www.process-one.net)
Scientists understood physics of climate change in the 1800s – thanks to a woman named Eunice Foote (theconversation.com)