Mechanical Engineering

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 Data Visualization DC for a meetup to learn about the 30 day chart challenge and some tips and tricks for rapid, high volume data visualization practices! Doors 5:30 Presentation starts 6:15 Please RSVP on [Luma ](https://luma.com/wggc3w3p?utm_source=meetup)for headcount purposes! #=#=#=#=#=#=#=# Got Data Viz? Sign up for a viz and tell and share your work for a few minutes. All are welcome! [https://forms.gle/9a3ssbVbwQFjpWdY8](https://forms.gle/9a3ssbVbwQFjpWdY8) Data Viz DC is a member of Data Community DC, a nonprofit dedicated to data education in the nation's capital. Learn more at [www.dc2.org](http://www.dc2.org/)

Welcome to our new home at the historic Tivoli Theater! Please check our details for access to the space on [our website](https://www.hacdc.org/visit/). Join the discord for questions / help getting in (use channel #let-me-in) [https://discord.gg/dNjuNhNmeT](https://discord.gg/dNjuNhNmeT)

[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.

Gamers only interested in ai ar war strategy only

​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)

We will have open shop hours for anyone to bring their bikes to work on or need help fixing your own bike. We will also have bikes that need to be fixed so you can learn if you like. We will need everyone to sign in when arriving and sign out when leaving so we can keep track of volunteer hours and shop times. Suggested donation of $15 per hour for use of tools and space would be appreciated. Thank you!

Back by popular demand, you're invited to our 3rd joint SPE-USAEE Happy Hour! Everyone had a great time at the event last fall, so we're bringing it back and changing venues! 🗓 **Date:** Thursday, February 19th 🕔 **Time:** 5:00 PM 📍 **Location:** [Mission Dupont, Washington DC](https://www.missiondupont.com/location/mission-dc/) (1606 20th Street NW) This is a great chance to meet fellow SPE members and connect with members of the National Capital Area Chapter of the US Association for Energy Economists (USAEE). 🍹 **Perks for Active Members:** Enjoy **a complimentary drink and hors d’oeuvres** on us! Whether you're new to the section or a long-time member, we’d love to see you there.

Sunday, February 22, 2026 - Luncheon at 2 pm; Lecture at 3 pm **Recent Top Stories in Biblical Archaeology** What stories are making headlines in the world of biblical archaeology? What exciting discoveries in Israel, Jordan, Egypt, and beyond are changing the ways that archaeologists and textual scholars view the biblical past? In this lecture, Glenn Corbett, Editor-in-Chief of Biblical Archaeology Review magazine, reviews some of the top biblical archaeology finds and stories from the past few years, from groundbreaking new discoveries about Jerusalem in the time of the biblical kings to dramatic breakthroughs in our understanding of the history and writing of the Dead Sea Scrolls. Find out which discovery tops the list AND get a sneak peek at some of the fascinating and thought-provoking articles being prepared for BAR this coming year! This event will be held at Nameste Jalsa Restaurant: 1504 King Street / Alexandria, VA 2231 Reservations are required. Please register.at: [https://basonova.org/next-lecture-reservation.html](https://basonova.org/next-lecture-reservation.html)

**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)

Join us in our English Conversation Practice group where we get to know one another, support each other and practice English! Whether you're a beginner or advanced speaker, we want to help support you wherever you are! What to expect: * introductions & ice breaker game * read current events article * discussion questions * announcements We will eat somewhere afterwards - hoping you can join!

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.

Want to mess with some electronics? Or perhaps contribute to HacDC's main group project? HacDC's latest event brings hardware projects to the community. We will focus primarily on the main project (Space Blimp!) but please feel free to bring some of your own projects to show off and work on!

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

Join the Columbus AI community for our quarterly gathering — a casual, community-focused evening where everyone has a chance to share, learn, and connect. These open mic–style events give anyone in the community up to **5 minutes** to present a project, share a tool, pose a question, or offer a perspective on the evolving AI space. No slides required — just a welcoming space to exchange ideas and keep the local AI conversation moving. If you’d like to take the stage, message **Chris (the organizer)** with a **title and short description** of what you’d like to share. Whether you’re deep in the field or just getting curious, come connect with others building and exploring AI in Columbus. Sponsored by [Transform Labs](https://www.transformlabs.com/services)

Let's grab some coffee/food and share a morning chat! The East Market has an ample parking lot and outdoor and indoor seating. Grab a cup of coffee from Winston's Coffee & Waffles or on your way to East Market and meet us on the second floor - table behind or east of the elevator. If the weather cooperates we will be meeting in the patio. Per what this group is about: "Everyone is welcome! International transplants to Columbus who want to improve language skills, Columbus residents who want to discuss international travel and culture, and anyone who enjoys getting together for good conversations."

**Important time note:** Please plan on arriving between 5:30 and 6:00 as the elevators lock after 6 and you'll need to message us and we'll need to come get you. The building address is 4450 Bridge Park The entrance is 6620 Mooney St, Suite 400 **Abstract** TBD **YouTube Link** TBA

**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

Christians in Tech is a community at the intersection of faith and technology. Our meetups are designed to spark meaningful conversations, promote knowledge sharing, and encourage growth—both in your career and your spiritual walk with God. Whether you're an experienced professional or just starting your tech journey, CIT welcomes you. Our Website [https://linktr.ee/citcbus](https://linktr.ee/citcbus) Sponsors and Partners * Improving (Venue Sponsor) * Bethel World Prayer Center (Fiscal Sponsor) * Fruits & Roots (Coffee Partner)

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.