Scientist

Security cleared professionals please join us for the in-person All Clearances Cleared Job Fair, Thursday, April 16, from 2pm – 5.30pm at the Westin Tysons Corner. Whether you’re between contracts, transitioning out of the military / government, or just casually looking around, please join us for this in-person event. Our hiring employers include Amentum, Applied Research Laboratory at the Penn State University, AT&T, Core4ce, E-infosol, Leidos, PCI Federal, PingWind, System High, Teksynap, Tom Sawyer Software and more. Opportunities for Intel, Program and Project Managers, Data Scientists, Cyber, Geospatial, Malware Analysts, Malware Programmers, Software Engineers and Developers, CNO Engineers and Analysts, Database Administrators, System Administrators, Software and Application Developers, Network Designers and Engineers, Help Desk, Trainers and more. For more info and to pre-register visit: [https://clearedjobs.net/events/all-clearances-cleared-job-fair-westin-7801-leesburg-pike-falls-church-virginia-8?utm_source=event+posting+april+16%2C+2026&utm_medium=share&utm_campaign=job+fair&utm_term=april+16%2C+2026](https://clearedjobs.net/events/all-clearances-cleared-job-fair-westin-7801-leesburg-pike-falls-church-virginia-8?utm_source=event+posting+april+16%2C+2026&utm_medium=share&utm_campaign=job+fair&utm_term=april+16%2C+2026)

• What we'll do On https://blackecon101.podbean.com/ Thursdays at 6 pm. discussing the economy....

***In Person Location:*** Rockville Library, second floor meeting room (Collaboration Room 3). Will recreate our Preamp circuit board inside EasyEDA to make it shareable for others. This ideally will also allow us to finish up design enough to submit for a materials grant program. We are experimenting with a new virtual join link - [https://meet.jit.si/mocomakers](https://meet.jit.si/mocomakers) If you can make it in person, that's always recommended! Let's resume repeated full end-to-end testing cycles and continue to iterate our design and resolution. We are getting close. Our community is building (and documenting for other teams) how to build a scanning tunneling microscope using a mix of common and 3D printed parts. This will allow us to scan and visualize a single atom - an ambitious we are doing over the course of a few months. The MoCo Makers community is one of the most innovative and competent groups in Maryland, and we've done everything from [publishing cancer research](https://pubmed.ncbi.nlm.nih.gov/38136356/), to [launching products](https://www.kickstarter.com/projects/gotim/cozy-curvy-multi-contour-pillow), [winning grants](https://covidinfocommons.datascience.columbia.edu/awards/2014255), and inspiring thousands. Now our biggest challenge yet has appeared. We are building a Scanning Tunneling Microscope, that will allow us to scan and visualize single atoms. Does it sound hard? Perhaps.. However! I have every confidence that we are now operating at a level were we can take on this mean, cross-functional project. We continue to build on our past successes, and a key technology we previously applied was increasing the signal of small voltages using OpAmps - which we did during our custom pH Probe project - [https://www.mocomakers.com/ph-probe/](https://www.mocomakers.com/ph-probe/) \- That technology is exactly what we need to get this machine working\, and at a high precision\! To get a better idea of what we are doing, see our reference project here: [https://www.youtube.com/watch?v=7N3OqTEq08g](https://www.youtube.com/watch?v=7N3OqTEq08g) All starting CAD, code, and reference files should exist. However, let's be the first Maker community to document the build process and share it with learners around the world. We have a bit over $2,000 in materials costs, so if you want to sponsor this project, and get banners at events with 20K attendees, and access to our email broadcast of 30K members, please contact matt@mocomakers.com We are also open to university, lab, or community partnerships so feel to reach out if you want to be part of this project. Together, we can do incredible things. ***In Person Location:*** Rockville Library, second floor meeting room (Meeting Room 3). To Join Virtually: https://meet.jit.si/mocomakers

16-19 Apr (4 sessions) FOUNDATIONAL TECHNIQUE: [Click here for the direct site with details. ](https://dancesportendurance.com/viennese-waltz-camp/)This first camp of two will slowly but surely teach you the basic skills in the Viennese Waltz to prepare you for this incredible experience, with a series of advancing lessons. You will learn basics of social Waltzing along with some elements of Smooth and Standard! By the end, you will have developed skills that will give you basic skills for any Viennese Waltz setting, and you will also make a lot of dance friends while doing so. **1\. Thu\, 16 Apr\, 730\-930 pm:** Fundamentals of Viennese Waltz, basics, simple left turns, whisks w/ladies turn, practice, begin Camp Choreography. **2\. Fri\, 17 Apr\, 730\-930 pm:** Practice, Review, basic combos, progressive basic, Patty-cake, simple right turns, Polka basics, Camp Choreography. **3\. Sat\, 18 Apr\, 2\-5 pm \(potluck snack day\):** This is our longest session, so bring healthy snacks for yourself, or even better for the group! Practice, Review, simple left and right turns. Camp choreography. Discussion of balls in Vienna and Washington DC (at the break). Begin [The Laendler as seen in the Sound of Music](https://www.facebook.com/reel/4339516396320630). The session concludes with learning the Fledermaus Quadrille #6 **4\. Sun\, 19 Apr\, 1\-330 pm:** Practice, warm-up. Camp review. Navigational skills. Review of left and right simple turns, introduction of reverse turn (International style left turn), navigation drill. If the difference in level in class is quite large, we may break into two classes with an intermediate group pressing to more difficult maneuvers while beginners review. CAMP 2: Oct 9-11 (3 sessions) EXPERIENCED WALTZERS (INTERMEDIATE AND UP): Camp 2 is for the connoisseur! You will advance in technique and knowledge of multiple fast waltz styles, including the classic International Style, American Smooth, and a few steps that have been almost lost to history that you might have seen in such movies as The Sound of Music and Snow White. We will also teach a routine that will advance in each session. **CAMP 2 (Higher level maneuvering and technique)** **5\. Tue\, 28 Apr\, 730\-930 pm:** We’ll have a full camp review of the fundamentals camp which will give the experienced waltzers a chance to brush up on their basics. Then the following: Navigational skills. Natural turn technique improvements. Transitions from Reverse turn to natural turn and back. Camp Choreography— [The Laendler as seen in the Sound of Music](https://www.facebook.com/reel/4339516396320630). **6\. Thu\, 30 Apr\, 730\-930 pm:** Practice, Review, Hook turn to the Right (Laendler), closed changes from left to right and right to left, fifth position break, run around. Camp Choreography — The Laendler as seen in the Sound of Music. Fledermaus Quadrille #6 and polka **7\. Sun 3 May\, 1\-230 pm:** Practice, Review, Advanced Navigational skills. Navigation skills, changing from left to right with the whisk. Hook turn. Camp Choreography— The Laendler as seen in the Sound of Music. **8\. Tue\, 5 May\, 730\-930 pm:** Practice, Review, Advanced navigation drills. American Smooth figures. Camp Choreography— The Laendler as seen in the Sound of Music. **Sat 9 May, 9-12 pm:** [Glen Echo Park Strauss Ball by Waltz Time! (](https://www.waltztimedances.org/)NOT INCLUDED) **After the camp, experience the Spanish Ballroom at Glen Echo, the largest dance floor in the DC metro area, for an evening dancing to fine Strauss music!**

Join the Bitcoin District Book Club! We meet every month to explore new and exciting rabbit holes by reading books that are popular with bitcoiners. Join us for a deep dive into End Times: Elites, Counter-Elites, and the Path of Political Disintegration by Peter Turchin. In this thought-provoking session, we’ll explore the structural forces that have historically led to societal instability—and why Turchin believes we are entering such a period today. Drawing on his work in “cliodynamics” (the quantitative study of history), Turchin examines cycles of rising inequality, elite overproduction, and political fragmentation. We’ll discuss how internal competition among elites and growing public discontent have repeatedly destabilized societies—from ancient Rome to modern America—and what this might mean for the decades ahead. For those interested in macro trends, power structures, and long-term societal patterns, this book offers a compelling framework for understanding today’s increasingly chaotic world. Buy the book on [Amazon](https://a.co/d/097mab73) **Event Notes:** * Discussion Starters: We’ll kick things off with a few key questions around elite dynamics and societal cycles, but feel free to bring your own perspectives. * Future Reads: Let us know if you have recommendations for future book club selections! We’ll add them to the list posted on our website. * Afterwards: Feel free to join us at Pubkey after the meeting to hang out, continue the conversation, and grab some food! **Getting There:** * 🔴🟢🟡 Gallery Place/Chinatown + 2 min walk * Parking: Street & garage parking available nearby

Title: Potential Applications of Negative Radiation Pressure in Astronomy, Medicine and 2WQC Date: April 19 2026 10:00 am - Noon EDT (16:00 - 18:00 CET) Abstract: While we are used to heating and pushing with light, there is also optical cooling and pulling. I will talk about negative radiation pressure, potential ways to generate it, and its novel applications, like non-ionizing medical scanners, 2WQC (two-way quantum computers) in theory solving NP problems, also potential astronomical sources and their observation. Speaker: Dr Jarek Duda is an assistant professor at Jagiellonian University. He holds degrees in computer science (PhD), mathematics (MSc) and physics (PhD). He is mainly focused on physics foundations, information theory, statistical analysis, and is known for introduction of asymmetric numeral systems.

\*\*"\*[Plastic People: The Hidden Crisis of Microplastics](https://act.sierraclub.org/events/details?formcampaignid=701Po00001d4LgXIAU), \*\*\*an 80-minute award-winning documentary from White Pine Pictures about plastic pollution and its impact on human health and the environment. The ground-breaking feature documentary investigates our addiction to plastic and the growing threat of microplastics on human health. Almost every bit of plastic ever made breaks down into “microplastics.” These microscopic particles drift in the air, float in all bodies of water, and mix into the soil, becoming a permanent part of the environment. Now, leading scientists are finding these particles in our bodies: organs, blood, brain tissue, and even the placentas of new mothers. What is the impact of these invisible invaders on our health? And can anything be done about it? **The screening will be held at the Greenbelt Cinema, 129 Centerway, Greenbelt, MD 20770.** Doors open at 1:30 pm. The documentary will launch at 2 pm, followed by discussion of solutions by distinguished panelists and participants." Please click on this [link ](https://act.sierraclub.org/events/details?formcampaignid=701Po00001d4LgXIAU)to register. \*Please post in comments if you'd like to carpool and where you're coming from. \*

Title: Foundations of Localized Symmetry Mathematics Date: April 18 2026 Noon - 14:00 EST Summary: The moment you use Euclid’s definitions of points and distances in any of your mathematical axioms, all that follows is assured to produce some level of nonsensical results when applied to the foundations of physics. The reason is not complicated: Euclid’s definitions are deeply mired in accepting as a “given” the very concepts that emerge only in well-defined inertial frames, which in turn are local instances of symmetries that are always finite and context dependent. In this talk, Terry will discuss how reframing mathematics in terms of symmetries that, as in the real world, are finite, composite, and dependent on self-observation (acceleration), results in a richer and far stranger set of mathematics in absolute conservation of quantum numbers generate local and global symmetries — the opposite of Noether’s theorem — that in turn create the emergent classical phenomenal such a particles, fields, space, and time. Speaker: Terry Bollinger is a computer scientist with BS, MS, and professional degrees from the Missouri University of Science and Technology.

Welcoming back Kecia Deveney for our annual Creative Minds Summit! This mixed media journal is a place for fragments. For what was saved without knowing why. For scraps, thoughts, images, and moments that did not ask to be finished. Nothing here needs to make sense. Nothing here needs to be useful. These pages are allowed to change, to be returned to, or left behind. This book belongs to the act of keeping. In **A Place for Fragments**, you’ll learn how to create a soft, fabric-covered journal using scraps and remnants using cardboard as our substrate; simple, forgiving binding and stitching methods; ways to layer paper and fabric without planning or pressure; how to let materials guide decisions instead of rules; how to work intuitively and trust when something feels complete enough; simple ways to work on inside pages and making an image focal point using resin. Learn more about this class, your student supply kit fee & list via Artistic Artifacts’ secure online website: [https://artisticartifacts.com/products/cms-place-for-fragments-with-kecia-deveney](https://artisticartifacts.com/products/cms-place-for-fragments-with-kecia-deveney) \*\*\* Due to the size or other requirements of the class or concurrent scheduling, some classes are in our second-floor space: access is via stairs only. Registrations for all Artistic Artifacts classes MUST be paid for [through our website](https://artisticartifacts.com/collections/wk), or via a visit to our shop at 4750 Eisenhower Avenue. We encourage you to RSVP here, but to ensure your seat you MUST follow through via our website. [View our complete class policies »](https://artisticartifacts.com/pages/class-policies)

The Astronomical Society of Greenbelt will hold a star party at the Greenbelt Observatory near Northway Fields on Saturday, April 18 from 9:00 to 11:00 PM. The event is free and open to the public. Visitors can come in to the observatory dome to watch the telescope operators or bring their own telescopes. The event will be cancelled if it’s clouded over or raining. All are welcome. Children should be accompanied by a parent or guardian.

Looking forward to seeing you! Please know that you don't have a reserved spot until you register at [Eventbrite](https://www.eventbrite.com/e/speed-dating-for-autistic-adults-tickets-1982622638683?aff=oddtdtcreator&fbclid=IwY2xjawP1rHJleHRuA2FlbQIxMQBzcnRjBmFwcF9pZBAyMjIwMzkxNzg4MjAwODkyAAEe09Q_4uRXeVchWzuAfDhgFlwnANLaOOKGr1stjbTaw5QD9gQXLos5IOBPUQs_aem_XUyVMTIlkYCPy8pVfz533Q) and purchase your ticket. Limited tickets available. Join us for a supportive, structured Speed Dating event for autistic adults (ages 25 to 40) on Sunday, April 19, 2026, from 2:00 to 4:00pm in Bethesda, MD (address provided after registration). This facilitated event is designed for heterosexual pairings and offers a welcoming, low-pressure environment to meet potential partners. Light refreshments will be provided. Registration is $35 on our website and free for our **[Constellations](https://www.harringtonmatchmaking.com/constellations-membership)** members.

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“Goddess of Spring and the Underworld,”** an introduction to the Greek goddess Persephone in her many incarnations, with Brittany Warman, former instructor at Ohio State University and co-founder of the Carterhaugh School of Folklore and the Fantastic. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/nv-persephone](https://events.ticketleap.com/tickets/profsandpints/nv-persephone) .] Join Brittany Warman, who has earned a huge following among Profs and Pints fans by delivering fantastic talks on folklore, myths, legends, and fantasy, for the perfect event for the season: a look at the spring goddess Persephone and the many ways in which she has inspired the human imagination. The story of Hades and Persephone is one of the most famous—and most retold—episodes in Greek mythology. Persephone’s abduction, her interlude in the Underworld, and her partial return to the world above have inspired statues and webcomics, ancient cults and contemporary poetry. Thousands of years after her tale was first told, we’re still fascinated by this goddess. Brittany will discuss how Persephone’s appeal lies in her liminality in being caught between two very different worlds and lives. She represents spring, renewal, and rebirth because Earth blooms with her return, but she’s also the Queen of the Underworld. From a 21st-century perspective, she’s basically a goth girl adorned with a flower crown. We’ll also look at Persephone’s mythic roots, including their connections to the Eleusinian Mysteries. And then we’ll dive into some of the ways that Persephone has been revised and retold in recent years, from the Tony award-winning musical *Hadestown* to the webcomic *Lore Olympus* to memes and fairy tales and fashion. After all, why be just one thing when you can be the queen of both spring and darkness? (Doors: $17, or $15 with a student ID. Listed time is for doors. Talk starts 30 minutes later.) Image: From “Proserpine” (Persephone) painted by Dante Gabriel Rossetti in 1882. (Birmingham Museums Trust / Wikimedia Commons.)

Walk for Children - 2026 Save Soil Walkathon in Columbus 🌍 Over 52% of the world soil is degraded and scientists warn we may have only a few decades of fertile soil left. As Sadhguru shares, soil is a living system—and when it degrades, our food, health, and future are at risk. https://www.youtube.com/watch?v=hyT-6qiubd0 🚶‍♂️🌎This Earth Day, Join the Walk for Children-2026 SaveSoil 5K Walkathon here in Columbus and help raise awareness about soil for the future of our children! Every step you take helps: ✔️ 1. Raise awareness in your communities about protecting and restoring soil. ✔️ 2. Supports sustainable food systems. ✔️ 3. Helps secure our children’s future. 📅 Date: April 26, 2026 📍 Location: Scioto Audubon Metro Park Check-in address 400 W Whittier St, Columbus, OH 43215 ⏰ Time: 8:30 a.m. check-in event starts at 9:30 a.m. 👉 Register here: https://www.eventbrite.com/e/walk-for-children-2026-save-soil-walkathon-in-columbus-registration-1986596534713?aff=oddtdtcreator 👉🏼Free and Open to All. Share this message and bring your neighbours, friends & family along to celebrate our planet! Let’s make it happen!

Come assist Van Buren Shelter (https://ymcacolumbus.org/locations/vanburen) staff in serving dinners and cleaning up on the 3rd Tuesday of each month. Dinner for the women is 5-6 pm and for the families is 6:15-7:15 pm. There is ample free parking available in the shelter's lot. The recommended area to park is in green in the image above. There will be a new entrance for the time being. We are asking all volunteers to enter through the Donation Dock door, the orange mark on the image above. This door is located between the Single Adults and Family Shelter. You will see 2 large garage doors with a large green trash compactor in the center. Please head to the closest garage door to the building wall, with a ramp leading up. There, you will see a door with a sign stating instructions on how to enter the building. Please ring the doorbell, and a staff member will come and escort you into the building. If a staff member takes longer than 5 minutes, please call the front desk at 614-689-2020. This is a new process for us, and we do not want to keep you waiting! We appreciate your patience as we navigate this temporary change. The shelter needs a volunteer count the day before the event so sign-up ends Monday at 4:50 PM. Afterwards some of us go to the Omnipresent Atheists Weekly Meetup in progress to have a bit to eat or drink (http://www.meetup.com/omnipresentatheists/). Volunteers must be 14 or older. Since we will be working around families, the YMCA does not permit volunteering by individuals with convictions for violent or sexual crimes. The YMCA reserves the right to run background checks on volunteers. For questions, comment on this page or contact: Andrew, awhit12@yahoo.com, (614)937-5802 (cell). Please let Andrew know if you volunteer anytime other than our COUNT events so that he can count your hours toward our service record.

AI is changing how art is made. But when does it stop being your work and start being the machine’s? This month we're going to be doing a panel with with digital image, music, and written word artists, talking about at what point, while using AI in the creation process, does the work become not the artist creation? We encourage audience participation during this event that will be moderated by Chris Slee. 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) Sign up also accessible via [Transform Labs Luma](https://luma.com/55umjqta)

We may pick a specific topic and post in advance or may discuss current events and various ad hoc topics . We would love to spend time hanging out and getting to know one another. Atheist, agnostics, other non-theists, and atheist-friendly people are welcome to join us. Note: COUNT operates a Facebook page at www.facebook.com/groups/COUNT.discussions (http://www.facebook.com/groups/COUNT.discussions/) to promote discussions among members and visitors.

**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). Topic: This month Chris Pazsint will be talking about Agentic Coding. How does one use CLI Based Agents, and Agentic IDEs such as Cursor, Kiro, Antigravity? How to include agentic coding plugins for IDEs you already love such as Visual Studio Code. 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 Central OH Python at centralohpython@gmail.com

Mental Health, how do you understand it? How can you improve it? How do you get rid of stress, anxiety and uncertainty? These emotions are buried deep in your reactive mind. Find out what the reactive mind is, and in the process find yourself. Have you ever suffered from a traumatic experience, a deep loss or been through a painful breakup? Has your ability to communicate suffered as a result? And after that, even though you "moved on" did you find that things were never quite the same? Have you ever looked at childhood photos, or reminisced your early life and wondered where that happiness and spark went? Are your emotions out of your own control? Have you ever felt, even if you aren’t aware of it, that possibly you are getting in your own way of your happiness and success? How does this affect your self-confidence? Find out what is at the root of all stress, anxiety, depression and self-doubt. Find out how and why you hold yourself back from achieving your goals and having the life you have dreamed of. As soon as you learn what is at the root of these unwanted conditions, you’ll see it is something you can DO something about. You will not be labeled or categorized at this MeetUp. This group is hosted by the Dianetics and Scientology Life Improvement Center of Central Ohio.

**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 You will need to scan your ID at the door to get a visitor badge. **Abstract** GitHub Copilot is powerful, but what if you could scale from a solo AI assistant to an entire team of specialized agents working in parallel? This session introduces Squad: an open-source framework for multi-agent orchestration that lets you define teams of AI agents with specific roles, responsibilities, and expertise. We'll progress from Copilot basics to the Copilot CLI, explore how Agents add autonomy, and see how Instructions and Skills let you customize agent behavior. Then, the climax: a live demo where a Squad team of 3 agents (Lead, Developer, Tester) stands up and builds a working application in real-time, showcasing true multi-agent collaboration. Whether you're new to AI or exploring how to scale your use of Copilot, this session will show you what's possible when agents work as a team. **YouTube Link** TBD