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Hints of the 4th dimension have been detected by physicists
What would it be like to experience the 4th dimension?
Physicists have understood at least theoretically, that there may be higher dimensions, besides our normal three. The first clue came in 1905 when Einstein developed his theory of special relativity. Of course, by dimensions we’re talking about length, width, and height. Generally speaking, when we talk about a fourth dimension, it’s considered space-time. But here, physicists mean a spatial dimension beyond the normal three, not a parallel universe, as such dimensions are mistaken for in popular sci-fi shows.
Even if there are other dimensions somewhere out there in our universe or in others, should we travel to a place which includes them, scientists aren’t so sure we could even experience them. Our brains may be incapable. Mathematically, we can describe the 4th dimension but we may never experience it in the physical realm.
Even so, that hasn’t stopped us from looking for evidence of higher dimensions. One model which helps us conceive of it easier and understand it better is a tesseract or hypercube. This is a cube within a cube. Though a helpful metaphor, it doesn’t actually exist in the real world. So how might scientists actually detect the 4th dimension? Two separate research teams, one in the US and one in Europe have completed dual experiments, to do just that.
Both of these were 2D experiments which hinted at a 4D world, utilizing a phenomenon known as the quantum Hall effect. The Hall Effect is when you have an electrically conducive material, say a sheet of metal or a wire, which you pass current through. The electrons move in one direction. Place a magnetic field perpendicular to the material and instead of electrons get diverted to the left or right, by what’s called the Lorentz force.
Find a good explanation of the Hall effect and quantum Hall effect here:
The result of the Hall effect is that electrons get stuck within a 2D system. They can then only move in two directions. The quantum Hall effect occurs at the quantum level, either when the material is at very low temperatures, or is subject to a very strong magnetic field. Here, an additional thing happens. The voltage doesn’t increase normally but instead, jumps up in steps. By restricting electrons with the quantum Hall effect, you can also measure them.
Follow the math and you’ll realize that the quantum Hall effect is also detectable within a 4D system. Professor Mikael Rechtsman of Penn State University was part of the American team. He told Gizmodo, "Physically, we don't have a 4D spatial system, but we can access 4D quantum Hall physics using this lower-dimensional system because the higher-dimensional system is coded in the complexity of the structure."
We ourselves as 3D objects cast a 2D shadow. A 4D object should then cast a 3D shadow. We can learn something about a 3D object by studying its shadow. So it stands to reason that we could also gain knowledge about a 4D object from its 3D shadow. Both teams in these experiments did something of that kind. They used lasers to catch a glimpse of the 4th dimension. The results of each experiment were published in two reports, both in the journal Nature.
In the European experiment, scientists took the element rubidium and cooled it down to absolute zero. Then, they trapped atoms there within a lattice of lasers, creating what researchers describe as, "an egg-carton-like crystal of light." Next, they introduced more lasers to excite the atoms, creating what’s known as a quantum “charge pump.” Though atoms themselves don’t have a charge, here they simulated the transport of electrical charges. Subtle variations in the atoms’ movements coincided with how the quantum Hall effect would play out in the 4th dimension.
To hear an explanation of the 4th dimension using a video game, click here:
In the US experiment, glass was used to control the flow of laser light into the system. This was basically a rectangular glass prism with a series of channels within it, which looked like a number of fiber optic cables stuck inside, running the length of the box and terminating at both ends. Researchers were able to manipulate the light using these channels as wave guides, in order to make it act like an electric field. When light jumped from opposite edges into the corners, researchers knew they had observed the quantum Hall effect, as it would occur in a 4D system.
Scientists at ETH Zürich, a university in Switzerland, conducted the European experiment. Researcher Oded Zilberberg was among them. He said that before these experiments, observing actions occurring in the 4th dimension seemed more like science fiction.
“Right now, those experiments are still far from any useful application,” he said. Yet, physics in the 4th dimension could be influencing our 3D world. As for applications Rechtsman said, “Maybe we can come up with new physics in the higher dimension and then design devices that take advantage the higher-dimensional physics in lower dimensions.”
In these experiments, the photons and electrons didn’t interact. In the next, scientists believe it might be interesting to see what happens when they do. Rechtsman claims we could gain a better understanding of the phases of matter by investigating the 4th dimension. Say we get a healthy grasp of it, is that the end? Certainly not. Theoretical physicists believe there may as many as 11 dimensions.
To learn about the 4th dimension from Carl Sagan himself, click here:
The COVID-19 pandemic is making health disparities in the United States crystal clear. It is a clarion call for health care systems to double their efforts in vulnerable communities.
- The COVID-19 pandemic has exacerbated America's health disparities, widening the divide between the haves and have nots.
- Studies show disparities in wealth, race, and online access have disproportionately harmed underserved U.S. communities during the pandemic.
- To begin curing this social aliment, health systems like Northwell Health are establishing relationships of trust in these communities so that the post-COVID world looks different than the pre-COVID one.
COVID-19 deepens U.S. health disparities<p>Communities on the pernicious side of America's health disparities have their unique histories, environments, and social structures. They are spread across the United States, but they all have one thing in common.</p><p>"There is one common divide in American communities, and that is poverty," said <a href="https://www.northwell.edu/about/leadership/debbie-salas-lopez" target="_blank">Debbie Salas-Lopez, MD, MPH</a>, senior vice president of community and population health at Northwell Health. "That is the undercurrent that manifests poor health, poor health outcomes, or poor health prognoses for future wellbeing."</p><p>Social determinants have far-reaching effects on health, and poor communities have unfavorable social determinants. To pick one of many examples, <a href="https://www.npr.org/2020/09/27/913612554/a-crisis-within-a-crisis-food-insecurity-and-covid-19" target="_blank" rel="noopener noreferrer">food insecurity</a> reduces access to quality food, leading to poor health and communal endemics of chronic medical conditions. The U.S. Centers for Disease Control and Prevention has identified some of these conditions, such as obesity and Type 2 diabetes, as increasing the risk of developing a severe case of coronavirus.</p><p>The pandemic didn't create poverty or food insecurity, but it exacerbated both, and the results have been catastrophic. A study published this summer in the <em><a href="https://link.springer.com/article/10.1007/s11606-020-05971-3" target="_blank">Journal of General Internal Medicine</a></em> suggested that "social factors such as income inequality may explain why some parts of the USA are hit harder by the COVID-19 pandemic than others."</p><p>That's not to say better-off families in the U.S. weren't harmed. A <a href="https://voxeu.org/article/poverty-inequality-and-covid-19-us" target="_blank" rel="noopener noreferrer">paper from the Centre for Economic Policy Research</a> noted that families in counties with a higher median income experienced adjustment costs associated with the pandemic—for example, lowering income-earning interactions to align with social distancing policies. However, the paper found that the costs of social distancing were much greater for poorer families, who cannot easily alter their living circumstances, which often include more individuals living in one home and a reliance on mass transit to reach work and grocery stores. They are also disproportionately represented in essential jobs, such as retail, transportation, and health care, where maintaining physical distance can be all but impossible.</p><p>The paper also cited a positive correlation between higher income inequality and higher rates of coronavirus infection. "Our interpretation is that poorer people are less able to protect themselves, which leads them to different choices—they face a steeper trade-off between their health and their economic welfare in the context of the threats posed by COVID-19," the authors wrote.</p><p>"There are so many pandemics that this pandemic has exacerbated," Dr. Salas-Lopez noted.</p><p>One example is the health-wealth gap. The mental stressors of maintaining a low socioeconomic status, especially in the face of extreme affluence, can have a physically degrading impact on health. <a href="https://www.scientificamerican.com/index.cfm/_api/render/file/?method=inline&fileID=123ECD96-EF81-46F6-983D2AE9A45FA354" target="_blank" rel="noopener noreferrer">Writing on this gap</a>, Robert Sapolsky, professor of biology and neurology at Stanford University, notes that socioeconomic stressors can increase blood pressure, reduce insulin response, increase chronic inflammation, and impair the prefrontal cortex and other brain functions through anxiety, depression, and cognitive load. </p><p>"Thus, from the macro level of entire body systems to the micro level of individual chromosomes, poverty finds a way to produce wear and tear," Sapolsky writes. "It is outrageous that if children are born into the wrong family, they will be predisposed toward poor health by the time they start to learn the alphabet."</p>Research on the economic and mental health fallout of COVID-19 is showing two things: That unemployment is hitting <a href="https://www.pewsocialtrends.org/2020/09/24/economic-fallout-from-covid-19-continues-to-hit-lower-income-americans-the-hardest/" target="_blank" rel="noopener noreferrer">low-income and young Americans</a> most during the pandemic, potentially widening the health-wealth gap further; and that the pandemic not only exacerbates mental health stressors, but is doing so at clinically relevant levels. As <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7413844/" target="_blank" rel="noopener noreferrer">the authors of one review</a> wrote, the pandemic's effects on mental health is itself an international public health priority.
Working to close the health gap<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDc5MDk1MS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNTYyMzQzMn0.KSFpXH7yHYrfVPtfgcxZqAHHYzCnC2bFxwSrJqBbH4I/img.jpg?width=980" id="b40e2" class="rm-shortcode" data-rm-shortcode-id="1b9035370ab7b02a0dc00758e494412b" data-rm-shortcode-name="rebelmouse-image" />
Northwell Health coronavirus testing center at Greater Springfield Community Church.
Credit: Northwell Health<p>Novel coronavirus may spread and infect indiscriminately, but pre-existing conditions, environmental stressors, and a lack of access to care and resources increase the risk of infection. These social determinants make the pandemic more dangerous, and erode communities' and families' abilities to heal from health crises that pre-date the pandemic.</p><p>How do we eliminate these divides? Dr. Salas-Lopez says the first step is recognition. "We have to open our eyes to see the suffering around us," she said. "Northwell has not shied away from that."</p><p>"We are steadfast in improving health outcomes for our vulnerable and underrepresented communities that have suffered because of the prevalence of chronic disease, a problem that led to the disproportionately higher death rate among African-Americans and Latinos during the COVID-19 pandemic," said Michael Dowling, Northwell's president and CEO. "We are committed to using every tool at our disposal—as a provider of health care, employer, purchaser and investor—to combat disparities and ensure the <a href="https://www.northwell.edu/education-and-resources/community-engagement/center-for-equity-of-care" target="_blank" rel="noopener noreferrer">equity of care</a> that everyone deserves." </p><p>With the need recognized, Dr. Salas-Lopez calls for health care systems to travel upstream and be proactive in those hard-hit communities. This requires health care systems to play a strong role, but not a unilateral one. They must build <a href="https://www.northwell.edu/news/insights/faith-based-leaders-are-the-key-to-improving-community-health" target="_blank" rel="noopener noreferrer">partnerships with leaders in those communities</a> and utilize those to ensure relationships last beyond the current crisis. </p><p>"We must meet with community leaders and talk to them to get their perspective on what they believe the community needs are and should be for the future. Together, we can co-create a plan to measurably improve [community] health and also to be ready for whatever comes next," she said.</p><p>Northwell has built relationships with local faith-based and community organizations in underserved communities of color. Those partnerships enabled Northwell to test more than 65,000 people across the metro New York region. The health system also offered education on coronavirus and precautions to curb its spread.</p><p>These initiatives began the process of building trust—trust that Northwell has counted on to return to these communities to administer flu vaccines to prepare for what experts fear may be a difficult flu season.</p><p>While Northwell has begun building bridges across the divides of the New York area, much will still need to be done to cure U.S. health care overall. There is hope that the COVID pandemic will awaken us to the deep disparities in the US.</p><p>"COVID has changed our world. We have to seize this opportunity, this pandemic, this crisis to do better," Dr. Salas-Lopez said. "Provide better care. Provide better health. Be better partners. Be better community citizens. And treat each other with respect and dignity.</p><p>"We need to find ways to unify this country because we're all human beings. We're all created equal, and we believe that health is one of those important rights."</p>
Philosopher Nick Bostrom's "singleton hypothesis" predicts the future of human societies.
- Nick Bostrom's "singleton hypothesis" says that intelligent life on Earth will eventually form a "singleton".
- The "singleton" could be a single government or an artificial intelligence that runs everything.
- Whether the singleton will be positive or negative depends on numerous factors and is not certain.
Want to Retain American Jobs? Stop Blaming Globalization<div class="rm-shortcode" data-media_id="oxK8j1xN" data-player_id="FvQKszTI" data-rm-shortcode-id="2cf425d7b91ed2a6fc4fe19d065f3408"> <div id="botr_oxK8j1xN_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/oxK8j1xN-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/oxK8j1xN-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/oxK8j1xN-FvQKszTI.js"></script> </div>
Shannon Lee shares lessons from her father in her new book, "Be Water, My Friend: The Teachings of Bruce Lee."
- Bruce Lee would have turned 80 years old on November 27, 2020. The legendary actor and martial artist's daughter, Shannon Lee, shares some of his wisdom and his philosophy on self help in a new book titled "Be Water, My Friend: The Teachings of Bruce Lee."
- In this video, Shannon shares a story of the fight that led to her father beginning a deeper philosophical journey, and how that informed his unique expression of martial arts called Jeet Kune Do.
- One lesson passed down from Bruce Lee was his use and placement of physical symbols as a way to help "cement for yourself this new way of being, or this new lesson you've learned." By working on ourselves (with the right tools), we can develop the skills necessary to rise and conquer new challenges.
How to deal with "epistemic exhaustion."