Bleistiftskizziertechniken

Let's get together to play some competitive coed doubles volleyball. **COST**: FREE **Court Type**: Outdoor grass **Minimum Skill Requirements**: Solid BB (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details) Attention: 1. This event is **not always on a first come, first served basis**. [Good doubles partner](https://docs.google.com/document/d/14weEw-P52XKx0P8K2l-ZOFtYU61wmfdkSkopbG5avro/) and those who can bring a net and ball, may get priority over others on the waitlist. 2. Since skill levels are **self-reported**, some attendees may not meet the expected level in reality, so we encourage you to choose a partner you can enjoy the game with, and since this is a **competitive** event, it is okay if you make a strong team and win all the games. 3. Since people arrive at different times, each group of 4 players will **set up and claim a net** as they arrive, and may continue playing without rotating until all nets are set. **Smiley Social documents:** 1. [Group Rules](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Smiley Social Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/edit) 3. [Good doubles partner](https://docs.google.com/document/d/14weEw-P52XKx0P8K2l-ZOFtYU61wmfdkSkopbG5avro/) 4. [Liability Waiver](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco)

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.

**Park Map/ MD Bus** *$36. Long hike: 13 mi., 2000 ft. elevation gain. Moderate hike: 9 mi., 1000 ft. elevation gain.* The central section of the Maryland portion of AT provides one of the most popular hikes in Maryland on account of the views from Black Rock and Annapolis Rocks. Long hikers will start from Raven’s Rock Road, crossing Little Antietam Creek (a bridge is available about ¼ mile from the trail if the water runs high) and passing the Ensign Cowall shelter. Moderate hikers will begin at Wolfsville Road. All hikers will pass the Pogo campsite, and then take an optional spur trail to the Black Rock Cliffs overlook and a second optional spur trail to the view at Annapolis Rocks of the Hagerstown Valley, finishing at the parking area on Rte. 40. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- RESERVATIONS Capital Hiking Club is a non-profit group, and the public is invited on all trips. Reservations are accepted as late as Friday, but reserving before Wednesday night helps ensure your spot and prevent cancellation of the hike due to low sign-ups. RSVP through Meetup and pay through PayPal. Please be sure your RSVP gives your full name and phone number and where you'll be boarding the bus. We don't want to leave you behind! Because this is a paid event, we cannot offer a waitlist should the hike fill up. If spots subsequently open up, they will become immediately available to anyone and everyone. FIRST-TIME HIKERS If you're a first-time hiker with us, please notify the leaders in advance so they can make sure you have the info you need. Hikers must be able to keep at least a 2 mph pace. BUS STOPS: MARYLAND ROUTING Please arrive 10 to 15 minutes before times listed below. All our bus stops are Metro accessible. If you're driving to meet the bus, we strongly advise using the Grosvenor bus stop, as parking is extremely limited at the others. Bus stops and times are as follows (click links for maps): * **[DC: Near 17th and K St. NW](https://bit.ly/17thandKnu)** downtown (east side of Farragut Square). Bus leaves at 8 a.m. SHARP, so it's essential to arrive well before 8. * **[Connecticut Ave. and Porter St,, NW, northeast corner](http://bit.ly/ConnecticutPorter)**. Bus briefly stops at the curb in front of the Broadmoor Apartments to pick up hikers about 8:10 a.m. * **[Connecticut Ave. and McKinley St., NW, southeast corner](http://bit.ly/ConnecticutMcKinley)**. Bus stops at the bus shelter in front of the Safeway to pick up hikers about 8:20 a.m. * **[Grosvenor-Strathmore Metro Station, North Bethesda](http://bit.ly/Grosv_Metro)**. Bus stops at the bus shelter nearest to Metro Station walkway entrance between the station and the parking garage about 8:30 a.m. LIABILITY By RSVP'ing for a CHC hike, you acknowledge and accept that hikers are responsible for their own safety and must assume risks and liability for all outings. CHC leaders, officers, and representatives shall not be liable for any injuries, loss or damage to persons or property, direct or consequential, arising out of any trips or club activities. Participants will be asked to sign a waiver the day of the hike. CANCELLATION POLICY To cancel and receive a full refund less a $5 processing fee, you must change your RSVP to "No" on Meetup **before 12PM the Thursday** before the hike. If you change your RSVP after 12PM the Thursday before the hike, no refunds will be issued. MORE DETAILS -- **[SEE THE FAQS ON OUR WEBSITE](https://www.capitalhikingclub.org/hikes-faqs)** for answers to questions such as these and many more: * What should I bring on a hike? * Can things be left on the bus during the hike? * When will the bus return to the metro Washington DC area? * Can I drive my car and meet the bus at the hike destination? * Are dogs allowed on hikes?

​Join the [Bitcoin District Initiative](https://bitcoindistrictinitiative.org/) (BDI) for a table tennis tournament fundraiser! Proceeds will support BDI's mission to spread Bitcoin education & adoption across the DMV, helping local nonprofits and communities build lasting financial independence. A portion of the funds raised will also be donated to the WDCTT Academy to create a long-term financial reserve (held in Bitcoin) to secure the future of its nonprofit community programs as the value of that reserve grows over time. 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b) ## ​**Event Details** ​Format: Round Robin play with a championship bracket. All skill levels welcome. Capacity: 36 players. Friends & family welcome to watch! Perks: Lunch included. ​Cost: $50 minimum donation. If you'd like to pay with Bitcoin, email trey@bitcoindistrictinitiative.org! 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b) ## ​**Why It Matters** ​Your support fuels BDI's efforts to bring Bitcoin education and adoption to the DMV, empowering local nonprofits and communities to achieve lasting financial independence. A portion of funds raised will also go to [WDCTT Academy](https://wdctt.com/non-profit/), whose nonprofit programs use table tennis to teach life skills, improve brain health, and strengthen community connections across generations. 🎟️ [REGISTER ON LUMA](https://luma.com/w46mzm6b)

## Lake Artemesia Walk Join us for a relaxed, social walk around the scenic Lake Artemesia loop in College Park. This is an easy-paced group walk—perfect for fresh air, light exercise, and good conversation. We’ll complete the paved lakeside loop (\~1.5–2 miles) at a comfortable pace, enjoying peaceful water views, birds, and greenery along the way. Those who want to go around the lake multiple times, can do so. ### Meeting Point Parking lot of Lake Artemesia Berwyn Rd & Branchville Rd Entrance College Park, MD 20740 Bring plenty of water, whatever you need for your hike, and your awesome authentic self. Keep it easygoing. RELEASE OF LIABILITY & ASSUMPTION OF RISK AGREEMENT: By being a member of this Group, RSVPing to any Activity, or participating in any Activity, You accept and agree to the terms and conditions described below: 1. You acknowledge that hiking in nature carries the risk of potential harm to yourself, including the risk of injuries such as broken bones or muscle/tendon injuries, illness, disability, or death. 2. You agree that You will at all times be responsible for Yourself and Your own safety. 3. You release and hold harmless with respect to all injury, disability, death, or loss of property, whether caused by negligence or otherwise, this group's leadership and members for the hikes that you participate in. 4. You acknowledge and agree that this Group is merely a collection of friends or potential friends who enjoy doing activities, and that in no event does any Organizer or Other Member assume any responsibility or liability for You. 5\. You agree not to sue and to release\, discharge\, waive and hold harmless all organizers and other members from and against all liabilities\, claims\, demands\, losses\, damages\, suits and proceedings\, for negligence\, carelessness or any other cause which you may have or that hereafter may accrue arising\, resulting from or related to your membership in this group or participation in any activity\.

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.

Julie B Booth is a fellow Creative Mind, and past teacher at Artistic Artifacts, excited to join us again for our annual Creative Minds Summit. Create a hand stitched landscape/cityscape that expresses the essence of a special-to-you place. Julie will guide you through the process of designing an abstracted version of your special place based on personal photos that you bring to class. Along the way, you’ll learn Julie’s approach to layered fabric collage, choosing interesting hand stitches to fill in the spaces of your scape (including needle lace and ruching), free style bead embroidery and attaching place-related natural objects using thread nets. Julie will also demo some finishing techniques. (This class is suitable for all levels, though some experience with hand-stitching is helpful.) Learn more about this class, your student supply kit fee & list via Artistic Artifacts’ secure online website: [https://artisticartifacts.com/products/cms-sensing-place-with-julie-booth](https://artisticartifacts.com/products/cms-sensing-place-with-julie-booth) \*\*\* 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)

A highly-requested returning teacher, Kecia Deveney, joins us for our annual Creative Minds Summit. Stitched After Printing: Gelli-Printed Fabric Creatures is welcoming to all levels and celebrates imperfection, texture, and personal voice. We’ll begin by printing directly onto fabric using Gelli Arts plates, layering color, pattern, and marks to create a surface full of history and movement. From there, the printed cloth becomes the foundation for a soft sculptural figure. Hand stitching, fabric collage, and simple mark making will bring each figure to life — wonky, expressive, and entirely unique. These are not perfect dolls; they are character-filled beings shaped by process and intuition. What you’ll learn: monoprinting layered designs on fabric using a polymer printing plate; intuitive mark making with paint and simple tools; shaping printed cloth into a soft sculptural figure; hand stitching for structure, detail, and expression; creating faces and personality through texture and stitches; trusting the process and letting a piece unfold naturally. Learn more about this class, your student supply kit fee & list via Artistic Artifacts’ secure online website: [https://artisticartifacts.com/products/cms-gelli-printed-fabric-creatures-with-kecia-deveney](https://artisticartifacts.com/products/cms-gelli-printed-fabric-creatures-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)

Jaime Echt, from The Crafter's Workshop, is joining our annual Creative Minds Summit this year! If you love the thought of playing with every color of the rainbow in one mixed media project, then this booklet is for you! Jaime will teach you various stenciling techniques while you explore the why’s and why not’s of color theory. Dimensional Stencil Butters combined with modeling pastes, paint pens, permanent pens and more will be the media of the day. Suitable to all, from beginner to crazy eclectic enthusiast, this class offers you instruction in color theory, stenciling techniques, mixed media painting, and simple bookmaking (zig-zag book ties with ribbon) as you use Stencil Butters in many different ways. Learn more about this class, your student supply kit fee & list via Artistic Artifacts’ secure online website: [https://artisticartifacts.com/products/cms-color-wheel-fold-out-booklet-with-jaime-echt](https://artisticartifacts.com/products/cms-color-wheel-fold-out-booklet-with-jaime-echt) \*\*\* 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)

Just good ole Ultimate Frisbee. Tons of fun. Great group. No stacks. No pick calls (but no picks!!!). Fair warning to those totally new to ultimate: it's a lot of running. \*\*Please pay close attention to the rule #6 listed below. *What to DEFINITELY bring* 1. Running shoes/Cleats 2. One white shirt *and* one dark shirt !!!! See this one !!!! \-\-\- IMPORTANT you can play both dark and white so we can make teams when we get there; just pickup after all 😎 3. Water *What you can ALSO bring* 4\. Snacks & Drinks 5\. Gloves \(winter\) 6\. Sunscreen \(summer\) 7\. Sunglasses 😎 House Rules - 1. Starting Play: Each point begins with both teams lining up on the front of opposite end zone lines. The defense throws ("pulls") the disc to the offense. 2. Scoring: Each time the offense catches a pass in the defense's end zone, the offense scores a point. The teams switch direction after every goal, and the next point begins with a new pull by the team that just scored. 3. Movement of the Disc: The disc may be advanced in any direction by completing a pass to a teammate. Players may not run with the disc. The person with the disc ("thrower") has ten seconds to throw the disc. The defender guarding the thrower ("marker") counts out the stall count. 4. Change of Possession: When a pass is not completed (e.g. out of bounds, drop, block, interception, stalled), the defense immediately takes possession of the disc and becomes the offense. 5. Substitutions: Players not in the game may replace players in the game after a score and during an injury timeout. (Modified depending on the number of the attendees) 6. Non-contact: Players must attempt to avoid physical contact during play. Picks and screens are also prohibited. 7. Fouls: When a player initiates contact that affects the play, a foul occurs. When a foul causes a player to lose possession, the play resumes as if the possession was retained. If the player that the foul was called against disagrees with the foul call, the play is redone. 8. Self-Officiating: Players are responsible for their own foul and line calls. The host will also step in if it is needed. Please message the event host for any questions or concerns. \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco)

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)

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)

Over time I'm hoping to organize a hike to all the Franklin County Metro Parks. This is the first one so if you're interested jump in! We'll start with the Canopy Walk, a cool feature of this park. Climb 100 stairs to the top - or take the elevator if stairs aren't your thing. At the top there are a bunch of things to play on - a rope bridge, a fireman pole that we can slide down - and more! About fifteen minutes there and we'll head to the natural trail, Buttonbush, Maple and Beech Trail for 2.2 miles then do a 1.7 mile loop on the paved Greenway Trail. We'll be passing our cars as we transition if you only want to do the first loop, or the second loop. Pace of around 3.5 mph but no one left behind. If there is an interest we can grab lunch nearby afterward.

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)

**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

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant.

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!