What would it take to set Uranus ablaze? Is it even possible to burn it in the typical sense? If anyone can figure it out, it’s the Dead Planets Society.
Join Dead Planeteers Leah and Chelsea as they invite planetary scientist Paul Byrne back to the podcast, to join in more of their chaotic antics.
They say that we ultimately lose information once it enters a black hole, but is this really the case? Let’s find out on today’s video. Have you ever wondered what happens to information when it falls into a black hole? Does it get destroyed forever? Does it arrive somewhere else? Does it enter a girl’s bookcase and call it for Murf? Is there a way for it to escape? Today, we’re diving into one of the biggest mysteries in physics: the black hole information paradox. But first, why should we care? Well, in case a black hole suddenly pops up in your bedroom or office table, this paradox sits at the intersection of quantum mechanics and general relativity, the two pillars of modern physics, and solving it could unlock new understandings of the universe itself. So, let’s get started. Our journey begins with looking at the basics of black holes and the paradox that has puzzled scientists for decades.
Like any good explainer, let’s begin with the basics. What exactly is a black hole? In simple terms, a black hole is a region in space where gravity is so strong that nothing, not even light, can escape from it. No Brad, it’s not a challenge; calm down. This happens when a massive star collapses under its own gravity, compressing all its mass into an incredibly small, incredibly dense point known as a singularity. Surrounding the singularity is the event horizon, the boundary beyond which nothing can return. Think of the event horizon as the ultimate point of no return. Once you cross it, you’re inevitably pulled towards the singularity, and there’s no way back. Feel like you know well about black holes? Great. Now let’s talk about Hawking radiation. In the 1970s, Stephen Hawking proposed that black holes aren’t completely black; instead, they emit a type of radiation due to quantum effects near the event horizon. This radiation, aptly named Hawking radiation, suggests that black holes can slowly lose mass and energy over time, eventually evaporating completely. But here’s where things get tricky: Hawking radiation is thermal. By that, we don’t mean that it’s smoking or anything, but that it appears to carry no information about any of the stuff that fell into the black hole. And this brings us to the heart of our mystery: the black hole information paradox. How can the information about the material that formed the black hole and fell into it be preserved if it’s seemingly lost in the radiation? With this foundation in place, I feel that we’re now ready to explore the paradox itself and the various theories proposed to resolve it. – DISCUSSIONS \& SOCIAL MEDIA
Researchers synthesize high-entropy liquid metal alloys at nanoscale, achieving atomic dispersion of noble metals and demonstrating enhanced catalytic activity for hydrogen evolution.
Whoever Controls #Electrolytes will Pave the way for #ElectricVehicles.
Team from the Dept of Chemistry at POSTECH have achieved a breakthrough in creating a gel electrolyte-based battery that is both stable and commercially viable…
Team develops a commercially viable and safe gel electrolyte for lithium batteries. Professor Soojin Park, Seoha Nam, a PhD candidate, and Dr. Hye Bin Son from the Department of Chemistry at Pohang University of Science and Technology (POSTECH) have achieved a breakthrough in creating a gel electrolyte-based battery that is both stable and commercially viable. Their research was recently published in the international journal Small.
In recent years, batteries have become ubiquitous in consumers’ daily lives. However, existing commercial battery technologies, which use liquid electrolytes and carbonaceous anodes, have certain drawbacks such as safety concerns, limited lifespan, and inadequate power density particularly at high temperatures.
Yet, there is an increasing need for batteries that can operate in extreme conditions, such as the high temperatures required in various industrial sectors, including medical device sterilization, subsurface exploration, and thermal reactors.
This has prompted researchers to search for solid electrolytes that are safe and compatible with lithium metal anodes, which are known for their high theoretical specific power capacity.
The challenges posed by solar and wind generators are real. They are inherently variable, producing electricity only when the sun is shining and the wind is blowing. To ensure reliable energy supplies, grids dominated by renewables need “firming” capacity: back-up technology that can supply electricity on demand.
Some, including the Albanese government, argue gas-fired generators are needed to fill the gap. Others, such as the Coalition, say renewables can’t “keep the lights on” at all and Australia should pursue nuclear energy instead.
But a new way to firm up the world’s electricity grids is fast developing: sodium-ion batteries. This emerging energy storage technology could be a game-changer – enabling our grids to run on 100% renewables.
From 2018, Dr. Jon LaPook’s groundbreaking report following an Alzheimer’s patient and her caregiver husband for 10 years to document the struggles they face. From 2019, Bill Whitaker’s heartbreaking look at frontotemporal dementia. From July 2017, Lesley Stahl’s examination of efforts to prevent Alzheimer’s. And from this past January, Sharyn Alfonsi’s story on a new approach to brain surgery that could revolutionize the treatment of Alzheimer’s disease.
The researchers focused on the reward system – a network in the brain that is activated when a person is motivated or in a positive emotional state – in order to ascertain its impact on recovery from a heart attack, formally known as an acute myocardial infarction (AMI).
They found that activating this system in mice led to better clinical outcomes and reduced scarring of the heart tissue. And while the science behind the link between the brain and the heart is still undefined, the Technion said the study raises hopes of improved treatment for heart disease.
