from the world's big
Scientists find a new way to measure gravity
Researchers develop a novel method to measure gravity that can get much more information.
- Scientists use lasers that suspend atoms in air to measure gravity.
- This method can be more precise and allow for gathering of much more information.
- Portal devices using this technique can help find mineral deposits and improve mapping.
You drop something and it falls. That's how you know there is gravity, right? Scientists at the University of California, Berkeley, improved upon this age-old test to find a new and potentially more useful way to measure gravity using lasers suspending atoms in midair.
The usual approach to measuring gravity involves making something fall, preferably in a long shielded tube or tower, and then measuring it as it flies by with an instrument. While this classic method connects to our everyday experience of gravity, it has limitations. For one, the opportunity to understand gravitational effects is very brief during such a test. There are also other forces, like magnetic fields, at play, possibly affecting the results.
The new technique developed by a team of researchers, led by physicist Victoria Xu, doesn't rely on making anything fall. Instead it pinpoints the differences in atoms in a superposition state.
Superposition is the physics principle that says a system can be in multiple states until it's measured.
What the researchers figured out is a process that starts by releasing a cloud of cesium atoms in a small chamber. Then they used flashing lights to split some of them into superposition states. Once the atoms were taken apart in this way, lasers were employed to keep them in fixed positions.
One atom in each pair was suspended a few micrometers higher than the other. This allowed the scientists to measure the wave particle duality of each atom's wave as it was being affected by gravity.
"Atoms in a spatially-separated quantum superposition are suspended against Earth's gravity, using the standing wave formed by an optical cavity. "
Wave particle duality is the quantum mechanics idea that every particle can act as a particle or a wave.
Measuring differences in duality between the atoms in a pair, with each one being at a varying distance from Earth, allowed the researchers to quantify the effects of gravity on the atoms.
The advantage of this technique is that it can potentially help gather a lot of new information, with implications for a wide range of fields, even the search for dark matter. Not having the atoms zipping through the air aids in the collection of significantly more precise measurements of gravity as well as the gravitational attraction between objects and more.
It is also easier to protect these much smaller measuring devices from interfering magnetic fields.
Another cool thing - this type of approach makes it easier to create portable gravity-measuring devices. That way they can be taken to different places on Earth to look for mineral deposits and for improved mapping.
"Laser light (purple) shines into our ultra-high vacuum chamber to laser-cool atoms to less than half a millionth of a degree above absolute zero. A pair of mirrors mounted inside the vacuum chamber enhance flashes of light which kick, suspend, and interfere the atoms. "
The study's co-author Holger Müller laid out some of the benefits:
"Let's say you don't want to measure the gravity of the entire Earth, but you want to measure the gravity of a small thing, such as a marble," he said to Science News. "We just need to put the marble close to our atoms [and hold it there]. In a traditional free-fall setup, the atoms would spend a very short time close to our marble — milliseconds — and we would get much less signal."
The initial reviews on the study were positive, with physicist Alan Jamison of MIT calling it "very impressive."
Check out the new study "Probing gravity by holding atoms for 20 seconds" in the journal Science.
Sallie Krawcheck and Bob Kulhan will be talking money, jobs, and how the pandemic will disproportionally affect women's finances.
Stress and anxiety therapist Dr. Amelia Aldao suggests waiting 60 seconds before reacting to a stressor, giving your rational mind time to catch up to your emotions.
- Stress is a complex defense mechanism that we experience in relation to either internal or external threats.
- Self-inflicted stress is stress we inflict upon ourselves with our emotional and behavioral responses to certain situations. An example of self-inflicted stress would be your car breaking down on the morning of an important meeting because your "check engine" let had been on, but you ignored it.
- There are a few ways for you to cope with self-inflicted internal and external stressors, put forth by researchers and therapists.
What is “self-inflicted stress”?<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMjg3NDgwMi9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTU5ODUyNzQ5M30.plH9mP77sPf3-un8g7KNIU84ad6zVgKIbQONcopUGK0/img.jpg?width=1245&coordinates=0%2C52%2C0%2C52&height=700" id="ee733" class="rm-shortcode" data-rm-shortcode-id="0ba6b904a1542563f02dfe038f18fe50" data-rm-shortcode-name="rebelmouse-image" alt="concept of stress businesswoman feeling stressed at her desk" />
Stress is a complex defence mechanism that each of us experiences differently depending on our personality and the circumstances of the situation.
Photo by Kite_rin on Shutterstock<p>Stress is an adaptation of a living organism to internal or external threats. It's a complex defense mechanism that each of us experiences in vastly different ways depending on various factors such as personality, causal factors, and circumstance.</p><p>Studies show that positive emotions (happiness, comfort, pleasure, etc) allow us to consider a larger set of options in order to make faster, smarter decisions. The opposite is also true - unpleasant emotions (anger, stress, fear, etc.) overwhelm our rational minds and impact our behavior in ways that damage our ability to make smart, rational choices. </p><p>Stressors can be either external or internal, and this greatly impacts how we react to that stressful situation. </p><p><strong>Examples of self-inflicted internal stress (stress we inflict on ourselves by how we manage expectations, time, relationships, and emotions) can include:</strong> </p><ul><li>Putting pressure on yourself to excel at something within an unrealistic timespan.</li><li>Negative self-talk after not being able to complete something (realistic or not). </li><li>Fear of public speaking, thinking you're going to make a mistake in front of everyone even if you're prepared.</li><li>Not having enough time in the day to complete your "to-do" list and having thoughts of not being good enough because you didn't complete an unrealistic goal. </li><li>An "all or nothing" attitude (example: if I can't get everything on my list done today I just won't do anything at all." </li></ul><p>In more serious situations, these kinds of internal stressors can lead to feelings of anxiety and/or depression. </p><p><strong>Examples of self-inflicted external stress can include:</strong> </p><ul><li>Planning a vacation in a time of budget cuts at work only to discover that your salary has been lowered in a time where you've spent more money than normal. </li><li>Procrastinating to study for an upcoming exam or presentation and then staying up all night the day before. </li><li>Ignoring the "check engine" light in your car only to have it break down in a moment of urgency (picking a child up from school, on your way to a meeting, etc). </li></ul>
How to manage your self-inflicted stress<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMjg3NDgwMS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxOTUxNjY2MX0.UvFSTWkXcFi4qIqv1moPKac3KIPJugywdeSePEw2Upo/img.jpg?width=1245&coordinates=0%2C103%2C0%2C1&height=700" id="c0a57" class="rm-shortcode" data-rm-shortcode-id="6a683cb20ee3a37aa850b32b39560db9" data-rm-shortcode-name="rebelmouse-image" alt="concept stress man squeezing happy face stress ball" />
A tip: wait one full minute before doing anything in reaction to the stressor.
Photo by Obak on Shutterstock<p>Over time, stress can damage areas of your life (adding even more stress) such as you having trouble sleeping, losing your appetite, losing interest in daily activities due to stress. Symptoms that you are stressed can include things like irritability, headaches/migraines, stomach pains, and unbalanced emotions.</p> <p>How do you cope with stress? There are a few different methods that are specifically designed to help you overcome self-inflicted stressors in your life. </p> <p><strong>Take a full 60 seconds of pause before doing anything.<br></strong>The 60 Second Method is simple: wait one minute before doing anything in reaction to the stressor. It can be as simple as that, according to OCD, stress, anxiety and depression therapist <a href="https://www.togethercbt.com/groups" target="_blank">Dr. Amelia Aldao</a>.</p> <p>"In particular," she explains in <a href="https://www.psychologytoday.com/us/blog/sweet-emotion/202003/the-60-second-approach-managing-emotions" target="_blank">this Psychology Today article</a>, "don't follow what the emotion is telling you to do. Don't send that angry text, don't decline the invitation to present at work, don't tell your potential date you're too busy this week…" </p> <p>While this is extremely difficult for some people, pausing before reacting to a stressful situation gives your "rational brain" the ability to catch up. The best thing you can do is "stay with your emotion", according to Dr. Aldao, "but don't act it out." </p> <p>Experiencing the emotions is a good thing, we should never ignore how certain situations (even stressful ones) make us feel - but acting from a place of pure emotion (instead of thinking rationally about a proper action to follow the situation) can be detrimental to our mental health. </p> <p>According to Dr. Aldao, by the end of these 60 seconds, the intensity of your initial emotional reaction to the stressor should have somewhat subsided, allowing you to act from a place of rationality than a place of hasty emotion. </p> <p><strong>Prioritize your schedule and manage your time in a realistic way to motivate yourself.<br></strong>When it comes to internal stressors, much of the time we inflict these upon ourselves with ever-growing to-do lists and agendas that seem impossible to get through. This, in a way, is setting ourselves up for failure, because we aren't giving ourselves realistic goals that can encourage us to keep going.</p> <p>Instead, what you're doing, is designing a system that will make you feel more stressed the more work you do because even if you complete the work, it will seem as though you're falling behind. </p> <p>Instead, you should operate in a prioritization system. This can be done by splitting your to-do list into categories such as immediate (needs to be done in the next 3 hours), average (needs to be done sometime today) and non-critical (can easily be done tomorrow or the next day). </p> <p><strong>Ask for help and accept that you might not be able to accomplish everything on your own (or risk falling apart).<br></strong><a href="https://www.ruthklein.com/" target="_blank">Productivity coach Ruth Klein</a>, who has also authored a book called Time Management Secrets for Working Women, explains that you should start by asking yourself what the top three priorities for the day are. If there are more than three main things, delegate some of your work to someone else or push back deadlines if you can. It takes courage to admit you can't do it all, but ultimately that might be your best option.</p> <p>Waiting too long to ask for help, according to Klein, will eventually lead us into an "overwhelmed crisis" which tends to zap us of all energy and motivation. </p> <p><strong>Acknowledge that some (if not most) of your stress may be self-inflicted and make changes to fix that.<br></strong>While there are external stressors that we have little to no control over, there are lots of times when the stress we feel is self-inflicted. And when stress is self-inflicted it can also be self-solved, even when that feels impossible.</p> <p>When we are managing self-inflicted stress, it can be extremely difficult to see outside of our bubble of worry. We are focused on trying to beat the stress because we don't want to feel stressed - it seems like a solution. But if your stress isn't motivating you to get things done (and is instead actually hindering you from being productive) it's time for you to change how you react to your stress. </p> <p><em>"What can I do to lessen my stress right now?" </em></p> <p><a href="https://www.lessstresscoach.com/2016/12/21/do-you-suffer-from-self-inflicted-stress/" target="_blank">Jamie Sussel Turner</a> (otherwise known as "The Less Stress Coach") explains that asking yourself this question and acknowledging some of the harmful behaviors and emotions you're feeling that are negatively impacting your stress levels can help us re-evaluate the importance of the things we're trying to do. </p>
The coronavirus pandemic has brought out the perception of selfishness among many.
- Selfish behavior has been analyzed by philosophers and psychologists for centuries.
- New research shows people may be wired for altruistic behavior and get more benefits from it.
- Crisis times tend to increase self-centered acts.
Paul Krugman on the Virtues of Selfishness<div class="rm-shortcode" data-media_id="7ZtAkm6C" data-player_id="FvQKszTI" data-rm-shortcode-id="828936bf6953080e9018307354c0c02b"> <div id="botr_7ZtAkm6C_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/7ZtAkm6C-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/7ZtAkm6C-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/7ZtAkm6C-FvQKszTI.js"></script> </div> The Nobel Prize-winning economist on the virtues of selfishness.
Evolution Is Moving Us Away from Selfishness. But Where Is It Taking ...<div class="rm-shortcode" data-media_id="cyeqmYCb" data-player_id="FvQKszTI" data-rm-shortcode-id="6c5efecb56456e9acc25cf36935b1826"> <div id="botr_cyeqmYCb_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/cyeqmYCb-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/cyeqmYCb-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/cyeqmYCb-FvQKszTI.js"></script> </div>
Exploring Morality and Selfishness in Modern Times<div class="rm-shortcode" data-media_id="02eX1Cag" data-player_id="FvQKszTI" data-rm-shortcode-id="45cc6180db791f32683988fb52faff26"> <div id="botr_02eX1Cag_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/02eX1Cag-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/02eX1Cag-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/02eX1Cag-FvQKszTI.js"></script> </div> Philosopher Peter Singer discusses the state of global ethics.
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