Astrophysics

[Profs and Pints DC](https://www.profsandpints.com/washingtondc) presents: **“Our Bodies, Our Minds,”** an exploration of the relationship between our biology and our thought processes, with Justin Brooks, M.D., associate professor of computer science and electrical engineering at University of Maryland, Baltimore County and scholar of computational psychophysiology. [Advance tickets: $13.50 plus sales tax and processing fees. Available at h[ttps://www.ticketleap.events/tickets/profsandpints/dc-bodies-minds](ttps://www.ticketleap.events/tickets/profsandpints/dc-bodies-minds) .] For millennia, humans have wondered how mind and body are connected. Are our thoughts just the electrical murmurs of nerve cells, or is there something more? Are they the result of millions of years of evolution? Explore the mind-body problem through the lens of measurable physiology with Dr. Justin Brooks, a physician-scientist whose research focuses on using mobile and wearable technologies to understand, predict, and influence human behavior and health. He’ll describe how millions of years of evolution shaped the way our minds and bodies speak to each other, with our nervous system being the product of countless adaptations that shape how we react, think, and survive. Reflexes hidden in our physiology, attention, and mental effort reveal a “biotype,” a stable but adaptable signature of how we process the world. The problem is that reflexes honed by a prehistoric world of predators and scarcity now must navigate the strange demands of a modern society. Rather than mirroring who we truly are, our reflexes often are just echoes of ancient survival needs. As a result, many of us live slightly out of sync with our own biology. We think faster than we feel, ignore our body’s quiet warnings, and misread the signals from our bodies that guide balance and well-being. Breakdowns in the conversation between mind and body cause stress to accumulate, performance to falters, and health to erode. In a talk that blends neuroscience, physiology, and philosophy, Dr. Brooks will discuss how our specific biotypes might hold clues for realigning our ancient wiring with the pace of contemporary life to avoid the pitfalls of burnout, chronic stress, and mental fatigue. He’ll explore how measuring the body can illuminate the mind and how both can be brought back into harmony for the world we live in now. (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: Part of an illustration of the brain in Traité complet de l'anatomie de l'homme, a textbook completed by anatomist Jean-Baptiste Marc Bourgery and artist Nicolas Henri Jacob in 1854.

Tally Ho Toastmasters meets regularly on the 1st and 3rd Monday each month. Our friendly club offers great opportunities to improve communication and leadership skills while providing excellent evaluations by the members. Learn more on our website at http://tallyho.toastmastersclubs.org/. Please, do not get discouraged by the number of members signed up on this MeetUp. Most of our active members do not use MeetUp to RSVP. We usually have around 10-15 members attending our meetings. Come check it out yourself!

​This gathering brings together women working in or curious about Bitcoin. We'll share real experiences, career paths, and lessons learned. The focus will be on how women contribute to building, securing, and supporting Bitcoin, from technical roles to adjacent fields. If you're already in tech or just starting to explore, join us to learn, connect, and discover what's possible. **👉 Please RSVP on Luma:** [https://luma.com/kn3txa1n](https://luma.com/kn3txa1n) Panelists will speak candidly about navigating the industry, building a career in emerging tech, and what it's really like to work in Bitcoin-focused organizations. The discussion aims to be approachable and insightful, giving women a clear, real-world view of opportunities, challenges, and growth in Bitcoin and related technologies. ​***Please respect the Bitcoin-only focus: We do not discuss, promote, or entertain conversations about altcoins, tokens, ICOs, NFTs, memecoins, or any other cryptocurrency projects. Nothing shared at this meetup is financial advice. Always do your own research!*** ​***🍺 Tell the bartender you're paying with Bitcoin before you close out your tab and get 21% off!*** ​ **Getting There:** * ​🔵🟠⚪ Federal Triangle + 10 min walk * ​🟢🟡 Archives-Navy Memorial-Penn Quarter + 2 min walk * ​🔴 Judiciary Square or Metro Center + 8 min walk * ​There is street parking and several nearby paid garages **👉 Please RSVP on Luma:** [https://luma.com/kn3txa1n](https://luma.com/kn3txa1n)

Happy Presidents' Day! **Due to the holiday, this meeting will be online only.** VAST, the Virginia Advanced Speakers Toastmasters club, is "where good speakers go to get better." It's the club where you can try out new material for presentations at work, practice for contests, or try something new to take your speaking to the next level. We're all experienced speakers — some with a little experience and some with a lot — but we're not all great speakers (yet). Our goal is to become better speakers, and to have fun along the way! We meeting every 1st and 3rd Mondays @ 7pm: 1st Monday - Online only 3rd Monday - Hybrid (in-person and online) In-person: University Mall Community Space 10689 Braddock Road Fairfax, VA 22032 Email vast5378@gmail.com for the Zoom link.

This popular and accomplished Toastmasters club (#4787) is open to everyone, with an average of 25 people per meeting, mainly business professionals from the Reston/Herndon area. Meetings are held on the 1st, 3rd and 5th Tuesdays of the month from 6pm to 7pm at Conference Room 1 on the ground floor of 1880 Campus Commons Dr, Reston, VA 20191 SOUTH ENTRANCE. Some of the group's members are accomplished professional speakers, while others are just starting down their path of improved public speaking, including many non-native English speakers. Whether you're just starting out and looking to improve your speaking or overcome some nervousness...or looking to gain connections and sharpen your skills, you'll feel connected with the members of Reston Town Center Toastmasters. Stop by. Check us out! Chances are you'll like us so much that you'll be back! For more information: http://towncentertoastmasters.toastmastersclubs.org/

The Third Tuesday of the month is Tuesday TubesDay!! **CLASS BEGINS: Promptly @ 6:00pm (arrive 5:45).** **+++++++++++++++++++++** **The Tire Demonstration:** **+++++++++++++++++++++** * WHEN: February 17th is Tuesday TubesDay!! * WHERE: Shirlington Library, inside in the large meeting room. * ARRIVE: Shoot for 5:45pm * CLASS BEGINS: Promptly @ 6:00pm * CLASS FINISHES: 7:30pm (library closes at 8pm) * Attendance is free * Ride after the Ride is at Samuel Beckett's @ 8:00pm. **+++++++++++++++++++++** **Optional:** **+++++++++++++++++++++** If you want to practice on your own tire, please bring the front wheel of your bicycle to the demonstration. If you bring your front wheel, please bring a towel or a sheet or similar to put on the table. This is not necessary if you just want to watch the demonstration. **(WATCH THIS VIDEO FOR HOW TO REMOVE YOUR FRONT WHEEL: [https://youtu.be/UxgneYfegNc](https://youtu.be/UxgneYfegNc)).** **This demonstration covers a range of topics, including:** * Fixing a flat tire / Changing a tire. * Which mobile pump is best. * C02 usage explained (not demonstrated). * Explain what basic tools to carry for various roadside repairs. * Please bring any bike tools or accessories that you already own and we will show you how to use them (don't worry if you don't own any). * I will follow up with an email after the class of the various things we went through and tool suggestion links. **+++++++++++++++++++++** **The Meeting Spot:** **+++++++++++++++++++++** Shirlington Library 4200 Campbell Ave Arlington, VA 22206 GPS: [https://goo.gl/maps/y1K7iBorEgsTWBpaA](https://goo.gl/maps/y1K7iBorEgsTWBpaA) **Inside in the large meeting room.** **+++++++++++++++++++++** **The Ride After The Ride:** **+++++++++++++++++++++** Samuel Beckett's 2800 S Randolph St #110 Arlington, VA 22206 GPS: [https://goo.gl/maps/rHx2PvqFicpFRrDZ8](https://goo.gl/maps/rHx2PvqFicpFRrDZ8)

Join PSW Science® on February 20 at 8 PM as we welcome Karen Lloyd, Wrigley Chair in Environmental Studies Professor of Earth Sciences at the University of Southern California. During the question and answer period, in-person attendees and live stream viewers may ask the speaker questions, and in-person attendees may also engage with the speaker during the post-lecture reception. Refreshments are served. For more information on this meeting, please visit: https://pswscience.org/meeting/2531/ The meeting will be held in the John Wesley Powell Auditorium, adjacent to the Cosmos Club. The Powell Auditorium is located at 2170 Florida Avenue, NW Washington, DC 20008. Use of the Cosmos Club is restricted to the Powell Auditorium, the entryway to the auditorium, and the restrooms immediately outside the auditorium. Please note there is no onsite parking available. PSW Science, founded in 1871, is one of the oldest scientific societies in Washington D.C. Now, over 150 years later, we celebrate the Society's rich history and contributions to scientific discovery and cross-disciplinary collaboration. For information on how to become a member of PSW Science and membership benefits, please visit https://pswscience.org/join/

Business Oriented Toastmasters (BOTM) is an exceptionally strong Toastmasters club in Rockville, MD. Our club has earned President's Distinguished Club status for the last thirteen years in a row. We are dedicated to helping each of our members achieve their personal public speaking and leadership goals in a friendly, supportive environment. We pride ourselves on having organized, professional meetings with strong evaluations, while having fun at the same time. Guests are always welcome and no notice is necessary. Just show up and plan to have fun. See how BOTM can help you achieve your goals. We are a diverse club with both seasoned and new Toastmasters, and all ethnic and professional backgrounds. For more information, please visit our website at botm.toastmastersclubs.org or contact us at contact-2279@toastmastersclubs.org Meeting locations: 1st Wednesday of every month in person at Faith United Methodist Church, 6810 Montrose Road, Rockville, MD 3rd Wednesday of every month via Zoom

**Life** Blaise Pascal was born in 1623 in the Auvergne region of France. His father was an expert mathematician and member of the *noblesse de robe* (a designation for high-level bureaucrats). His mother died when Pascal was only three. Under his father’s anti-scholastic and modern approach, Pascal read widely but idiosyncratically in law, the Bible, Church Fathers, science, and, eventually, mathematics—but relatively little in literature. By his teens, his father had introduced Pascal to the group of intellectuals associated with Père Marin Mersenne. He suffered medical issues from a young age and throughout his life and was for some time under the care of one of his sisters. He was, for example, too ill personally to conduct his famous experiment on Puy-de-Dôme that provided evidence that air pressure differs at different elevations. He had a deeply mystical or religious experience (“Night of Fire”) on the evening of November 23, 1654, after which he renounced his mathematical and scientific pursuits in favor of religious pursuits. He had notes from the Night of Fire sown into his jacket. He died at only 39 in 1662. **Themes** While Pascal did not invent the triangle named for him (it had been known not only to Chinese, Indian, and Islamic scholars but also European ones), he studied it and showed some of its properties. In physics, he did experiments with mercury demonstrating that air pressure varied with elevation and studied hydraulics, giving us what is now called Pascal’s law. He was one of the first to devise a working calculating machine, several of which still exist, creating three versions for different uses. As might be expected from someone of such evident skill in math and science, he did not care much for Aristotelian approaches, such as essences, form, and matter. Pascal as philosopher presents some problems. In the first place, his non-scientific writings had the avowed purpose of promoting Christianity and, at times, Jansenism. His most famous work, *Pensées*, was not published in his lifetime but rather arranged by family and associates after his death based on written notes supposedly but not definitively intended for a work of Christian apologetics. But the psychological insights of the Pensées, and its clear and sharp style, have perhaps against his own wishes established Pascal as some sort of philosopher, if not a proto-(Christian) Existentialist. His attacks on the power and utility of reason are ironically almost coeval with the start of the European Enlightenment. Among his more famous ideas is that the heart has its reasons that the mind knows not of and discussing belief in God in terms of a wager. Is Pascal’s Wager a joke, taking to humorous extremes techniques of probability he had had a hand in developing? Or is he serious, aiming to show that reason fails when it comes to life’s most consequential decisions? Or is the Wager meant to offer reasoned support for a prior, non-rational embrace of God? We’ll discuss these and other questions to try to understand Pascal’s contributions to philosophy and what insights he can offer today. **Reading** Our readings for this month are *Pensées* and selections from *Discussion with Monsieur de Sacy*, the *Art of Persuasion,* and *Writings on Grace*. These can all be found in an edition from [Oxford University Press](https://global.oup.com/academic/product/penses-and-other-writings-9780199540365?cc=us&lang=en&). **Optional** * [Blasie Pascal, Internet Encyclopedia of Philosophy](https://iep.utm.edu/pascal-b/) * [Pascal's Wager, Stanford Encyclopedia of Philosophy](https://plato.stanford.edu/entries/pascal-wager/) * [Lettres Provinciales, Wikisource](https://en.wikisource.org/wiki/Lettres_Provinciales) * [Prayer, to Ask of God the Proper Use of Sickness, Wikisource](https://en.wikisource.org/wiki/Blaise_Pascal/Prayer,_to_Ask_of_God_the_Proper_Use_of_Sickness) **References for Pascal's Contributions to Math and Science** * [Pascal's Triangle: What It Is and How to Use It, Science Notes](https://sciencenotes.org/pascals-triangle/) * [Pascaline (Calculator), Wikipedia](https://en.wikipedia.org/wiki/Pascaline) * [Pascal's Law, Wikipedia](https://en.wikipedia.org/wiki/Pascal%27s_law) * [Pascal's Theorem (Geometry), Wikipedia](https://en.wikipedia.org/wiki/Pascal%27s_theorem)

Shilohites Toastmasters meets every 2nd and 4th Sundays. Meetings start at 4:00 pm, and last one hour. We are a community club open to all. Parking is free. We focus on personal goals for professional development.

Title: An Easy Intro to Feynman's Quantum ElectroDynamics (QED) Summary: One of the most delightful and informative physics books ever written is Richard Feynman’s QED. In this short book, Feynman undertook the daunting task of explaining his Nobel-Prize-winning theory, Quantum ElectroDynamics, without any math except in a few elaborating footnotes. Remarkably, he succeeds! In this talk, Terry replicates many of his arguments to show how you, too, can understand one of the most fundamental mechanisms of physical reality by using not much more than lots of tiny one-hand clock dials moving through space. Speaker: Terry Bollinger is a computer scientist Speaker: Terry Bollinger is a computer scientist with BS, MS and Professional degrees from the Missouri University of Science and Technology.

In a parallel world where everyone has an innate “frequency,” those with high frequencies are gifted, popular, and – most importantly – lucky. People in lower ranges have correspondingly less of these traits but more emotional depth. When someone with extremely high frequency is in close proximity to someone especially low, chaos ensues. A boy and girl at opposite extremes of the scale meet in elementary school and encounter each other repeatedly over many years. While the story seems at first to be a *Romeo and Juliet* variation in search of a happy ending, their universe has some secrets that will make the action weirder and more entertaining than anyone could expect. ■ Title — *Frequencies* ■ A.K.A. — *OXV: The Manual* ■ Director — Darren Paul Fisher ■ Cast — Daniel Fraser, Eleanor Wyld, Owen Pugh ■ Unrated, suitable for teens and adults ■ ©2013 \| 1h 49m \| Mystery\, Romance\, Sci\-Fi ■ Distributed by Samuel Goldwyn Films ■ Licensed for showing in Alexandria libraries by Swank Motion Pictures

**Join us in Falls Church for conversations that go beyond small talk.** Higher Grounds – Falls Church is where this growing network of gatherings began: a space for thoughtful, authentic dialogue about what matters most. Whether we’re exploring the nature of happiness, the challenges and possibilities of midlife, spirituality, culture, capitalism, parenting, or the role of art and travel in a meaningful life, every conversation is shaped by the people in the room. There’s no set leader or rigid agenda—just a shared commitment to listen as much as we speak. We start with brief introductions focused on what makes you *you* (not your LinkedIn bio), then dive straight into whatever is on people’s minds. The direction of each meetup emerges organically, making every event unique. MANDATORY: PLEASE REVIEW OUR COMMUNITY GUIDELINES IN THE GROUP DESCRIPTION. Everyone is expected to engage in respectful conversations and listen deeply as well as share. We have a zero tolerance policy of sexual harassment and hate speech. Come ready to share, reflect, and connect with others in Falls Church who are also seeking deeper conversations. **Suggested Questions: Life Stages & Transitions** 1. What did you think you'd have figured out by now that you're still completely winging? 2. When did you realize your parents' advice was for a world that no longer exists? 3. What are you finally old enough to stop pretending to care about? **Suggested Questions: Identity After the Roles** 1. Who are you when nobody needs anything from you? 2. What dream keeps resurfacing even though the "practical" time has passed? 3. How do you handle having the freedom you always said you wanted? **Suggested Questions: AI & Being Human** 1. What human experiences will AI never truly understand? 2. If machines handled all your have-to's, what would you actually do? 3. What becomes more precious as everything becomes automated? **Suggested Questions: Belief & Meaning** 1. What certainties have you given up, and what rushed in to fill that space? 2. How has knowing someone who died changed how you live? 3. What do you believe now that would shock your younger self? **Suggested Questions: The Modern Psyche** 1. What anxiety do you carry that previous generations didn't have? 2. Which of your survival strategies are you ready to retire? 3. What uncomfortable truth about happiness did it take you years to accept? **Suggested Questions: Work & Purpose** 1. When did you stop believing that your job would complete you? 2. What would you do for work if money and status weren't factors? 3. How has your definition of "making it" changed over the years? **Suggested Questions: Relationships & Connection** 1. What relationship dynamic do you keep recreating, and why? 2. When did you realize your parents were just people trying their best? 3. What kind of loneliness doesn't go away even when you're with others? **Suggested Questions: Time & Mortality** 1. What are you running out of time to say or do? 2. How differently do you spend your time knowing it's finite? 3. What will you regret not trying, even if you fail? **Suggested Questions: Society & Culture** 1. What social convention do you follow even though it makes no sense? 2. Which generation do you understand least, and what might you be missing? 3. What aspect of how we live now will seem insane in 20 years? **Suggested Questions: Personal Philosophy** 1. What rule for life did you create after learning something the hard way? 2. When did you stop believing that everyone else had it figured out 3. What paradox about life have you learned to live with?

This meeting will be an open discussion about the book "an Immense World" by Ed Yong

As you may or may not know--I didn't until late last year--Aristotle wrote extensively on "friendship" in the Nicomachean Ethics. After 69 years the concept of friendship still creates questions and uncertainty. I had close friends in high school and for a few years after high school but our interests diverged and people moved all over the country so it was hard to maintain connections. * So if I/you haven't talked with a friend for several years, are you still friends? Are we friends who meet at Drunken Philosophy or Omnipresent Atheists? * Can you be friends with someone with whom you have virulently divergent political views? Sartre and Camus could not. * Aristotle regarded friendship as essential to a good life, not merely an added "bonus." Do you agree? * In the Nicomachean Ethics (Books VIII and IX), he claims that wealth and power are meaningless without friends. Trump has wealth and power but seems to have no real friends, but wealth and power seem meaningful to him in perverted ways. Can you have meaning in your life without friends? * Do men and women view and maintain friendships in different ways? * Aristotle categorizes friendship into three types, based on what forms the bond: * **Utility**: Based on mutual benefit, but this type is fragile and ends when the usefulness ceases. * **Pleasure**: Based on shared enjoyment (e.g., humor, hobbies). Common among youth but fades as interests change. * **Virtue (The "Complete" Friendship)**: Based on mutual respect for each other's character and goodness. You wish good for the other for their sake, not yours. * **Key Principles of "True" (Virtuous) Friendship:** * **Permanence**: Virtuous friendships last a lifetime whereas those based on utility and pleasure are fleeting. * **Reciprocity**: Requires mutual goodwill; secret or unreciprocated affection does not qualify. * **The "Second Self"**: A true friend is "another self"—their virtue helps you understand and improve yourself. * **Time and Intimacy**: Deep ("complete") friendships are few, built on time and shared experiences. * **Self-Love and Friendship:** * Good friendship starts with being a friend to yourself. * They distinguish shallow egoism (chasing honors) from real self-love (pursuing virtue). * A virtuous person’s pleasant self-company allows them to be a stable, good friend to others. * Aristotle argues that one's social circle ultimately reflects one's character—a view with striking relevance today. Well--the Drunken Philosophy social circle certainly reflects good character!

ASH is Atheists, Skeptics and Humanists of First Unitarian Universalists of Columbus Ohio TBD Snacks are usually available, and you are welcome to bringing something to share!

Optimistic Orators Toastmasters non-profit speech improvement group. No materials needed.

**NEW LOCATION: Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: * 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. * 6:30 to 8:00 pm. Main meeting and presentation(s). See the handy Parking Map - we recommend street parking. [Street Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact centralohpython@gmail.com

Bring your Raspberry Pi, Arduino, microcontroller, or any other electronic project and join fellow electronics makers for a night of creativity and collaboration! This session is open forum to share your current projects—whether complete or in progress, it’s all interesting! Whether you’re deep into embedded systems, exploring new ideas, or just getting started, you’ll find a welcoming space to collaborate, share, and get inspired. (NOTICE - Location change!) This session will be at the Karl Road Branch of the Columbus Library in the Conference Room 2.

Early-bird coffee and conversation at [Good Cafe](https://goodcafeeaston.com/)!