Philately

Meet new friends and enjoy a **medium/low difficulty hike** at Ball’s Bluff Regional Park! This hike focuses on good conversation and fresh air as we hike through wooded trails, with scenic views of the Potomac River. It’s a perfect way to connect with others who love the outdoors and take in the natural beauty of Leesburg during this 3-hour hike. Ball’s Bluff Regional Park is a hidden gem rich in history and natural beauty. The park features winding forest trails, scenic river views, and quiet spots perfect for taking a break or chatting with fellow hikers. Once the site of a Civil War battle, it’s now a serene place to enjoy nature and experience a peaceful escape just minutes from downtown Leesburg. **Meeting Time & Location:** 9:30 AM at the **Ball's Bluff Regional Park Parking Lot**. **Distance:** 5.34 miles (approximately) **Elevation Gain:** 643 feet **Difficulty:** Moderate Hike This hike features natural trails with moderate difficulty, including some elevation gains. We recommend wearing sturdy hiking shoes to navigate this terrain comfortably. **Estimated Duration:** 3 hours. **Waitlist Policy** To keep things fair, hikers will be moved off the waitlist in this order: **1\. Regular Hikers:** Those who join hikes often get first priority. **2\. Past Hikers:** Next are returning hikers, based on attendance and cancellation history. Frequent cancellations may lower priority. **3\. New Hikers:** New members will be added as space allows. **Age Requirement:** **Children under 18 are not permitted** to ensure a comfortable experience for all participants. Thank you for your understanding and cooperation. **Pace:** Moderate. We'll walk a steady, comfortable pace that’s manageable for most hikers with a reasonable fitness level. Breaks are regular but not overly frequent, allowing for a balanced experience of exercise and enjoyment. **Trail Map:** [Ball's Bluff - 5.34mi loop](https://www.alltrails.com/explore/custom-routes/custom-route-ball-s-bluff-red-and-orange-loop-0010dae?u=i&sh=mdqqtd) **Restrooms:** Restrooms are not available on this hike. **Lunch After the Hike:** After we wrap up our hike, we invite you to join us for a relaxed lunch together. We'll meet for a casual lunch at **[Vanish Farmwoods Brewery,](https://maps.app.goo.gl/RRviGPewRvUmow46A)** *[42245 Black Hops Lane](https://maps.app.goo.gl/RRviGPewRvUmow46A)* *[Leesburg, VA 20176](https://maps.app.goo.gl/RRviGPewRvUmow46A)*

**Hi everyone!** **It’s time for us to finally get together and put some faces to the names! I’m so excited to host our first meetup at The Perch in Tysons. It’s a beautiful sky park 11 stories up with plenty of space for us to relax and talk.** **The goal for this first one is simple: just a casual "meet and greet." Whether you’re new to the area or just looking to expand your social circle, we’d love to have you there.**

Celebrate Mother’s Day with a little extra \*moo\*-magic! Free with your General Admission ticket , you can enjoy a special photo op with Rusty, the adorable Highland calf, make flower pots & cards for Mom, and spend time with our sweet spring babies. Grab some delicious bites from Two Smooth Dudes food truck while the kids play and explore!

**Mother’s Day at Machu Picchu Restobar** Treat Mom to the best Peruvian cuisine in Ashburn with a side of smooth sounds. 🎷 **Live Saxophonist** starting at 1:00 PM 🍹 **Mom’s First Drink is FREE!** 🍽️ **No Reservations Needed** – Walk-ins only (First come, first served) Make this Sunday special with great food, refreshing cocktails, and the perfect weekend atmosphere. * **The Bar:** Full cocktail menu and Pisco specials available. * **The Atmosphere:** High-energy, loud music, and the best crowd in NoVa. * **Location:** 📍 20020 Ashbrook Commons Plz Unit 117, Ashburn, VA 20147

Consider it cancelled if it’s raining (Sorry, not at that level yet 😬) Maybe one day!

Join the Latin American Motorcycle Association, Manassas Chapter, for our monthly club meeting. This meeting is open to the public, whether you ride a cruiser bike, sport bike, or are a beginner rider, this meeting is perfect opportunity for anyone looking to find more information about L.A.M.A. and experience the thrill of riding motorcycles in a group setting. We will be discussing our upcoming rides so get ready to rev your engines and explore the open road with us!

Arrival time: 9:00 am Pedal: 9:15 am. The weather looks to be great for Sunday. The Rides Two routes of varying length and difficulty are available for this ride. Both routes start and end at the same location. Ride A (Some Hills) Distance: 39.0 mi Total Climb: 2,151 ft Max Grade: 6.9% Avg. Pace: 15 to 17 MPH (we may separate into two groups: A1 avg. 17 + mph and A2 avg. 15 to 16 mph) Route Map: https://ridewithgps.com/routes/28212610 Ride B (Fewer Hills) Distance: 29.8 mi Total Climb: 1434 ft Avg. Pace: 12 - 14 MPH Max Grade: 6.5% Route Map: https://ridewithgps.com/routes/28212689 All persons participating in this activity accept and/or assume any and all risks of injuries (physical or otherwise) arising from and/or associated with this activity. Notes: * Each person is responsible for loading the route onto to your GPS device or printing your own cue sheet. You can use the links below to download the route map. After the Ride...Pizza! After the ride, we'll meet for refreshing beverages, delicious food, and great conversation at Firework's Pizza. Fireworks Pizza, which is located on Harrison Street SE just 2 blocks north of the W&OD Trail, is well known for their great pizza, yet has an impressive list of non-pizza offerings as well. We will likely arrive at Fireworks pizza between 12:30 and 1:00 pm. Click HERE (http://www.fireworkspizza.com/FireWorksLeesburg.html) to go to the Firework's Pizza web site for more information.

🎾 Welcome to Tennis Lovers DMV 3+ 🎾 This group is for intermediate & advanced players 💪 with a USTA NTRP rating of 3.0+ ⭐ We thrive on competitive doubles 🔥🤝 and invite you to join us and RSVP ✅ for our exciting meetup events! Let’s rally, compete, and have a blast — see you on the court soon! 🎾😄🏆

Event Starts @ 1 pm $5 entry Prize support based on attendance

Jujutsu

Casual Pokemon TCG play! Proxy friendly.

256 pages [Technology] • Paperback • Hardcover • Kindle • Audiobook • Library: https://fcplcat.fairfaxcounty.gov/search/title.aspx?ctx=1.1033.0.0.1&pos=1&cn=614113 Check the How To Find Us section for Zoom Link **(Remember, the Zoom Link is different each month, do not bookmark)** ### Review "[Co-Intelligence] is a solid explainer. Convincing…a blueprint…smart and well informed…"— The Wall Street Journal "A sharp and good-humoured guide to how to make the most of generative AI. Mollick follows his own prescription for success, 'inviting AI to the table' and running his own experiements into its creative and problem-solving potential." * Andrew Hill, The Financial Times "Generative AI has an oracle, and his name is Ethan Mollick. Lucky you: our oracle has written a lucid, succinct, and eminently practical guide to navigating the revolution that is right now unfolding at an astonishing pace. Co-Intelligence is the very best book I know about the ins, outs, and ethics of generative AI. Drop everything and read it cover to cover NOW." — Angela Duckworth, New York Times bestselling author of Grit "Ethan Mollick has been a leader with the hands-on exploration of AI's evolving capabilities. In Co-Intelligence, he masterfully navigates the landscape of AI advancements with insightful and informative commentary, presented with remarkable clarity and precision. This book is an invaluable resource, offering a comprehensive gide to current trends and future expectations in AI. I wholeheartedly recommend it to anyone looking to deepen their understanding of this rapidly evolving technology." — Eric Horvitz, Chief Scientific Officer, Microsoft “In today’s cacophony of ‘AI hot takes’, Mollick has distinguished himself as the leading voice of reason on the implications of AI for work and education. Anyone seeking a basis of practical knowledge to understand the coming massive changes should read this insightful book right now." — Reid Hoffman, Co-Founder of LinkedIn and Inflection AI "Co-Intelligence brilliantly captures the essence of our evolving relationship with AI. With lucid explanations and useful examples, Mollick shows how we can enlist this technology's astonishing power to build a more intelligent and humane future." — Daniel H. Pink, New York Times bestselling author of The Power of Regret, Drive, and A Whole New Mind “Embark on a transformative journey with Co-Intelligence, Ethan Mollick’s page-turning must-read for those at the helm. Mollick’s work will help CEOs and leaders harness AI’s enormous potential as a catalyst for elevating the capabilities of any team and any organization. Brilliant, authoritative, and educational.” — Jim M. Citrin, Leader, Spencer Stuart CEO & Board Practice, author of You’re in Charge, Now What? and The 5 Patterns of Extraordinary Careers ### About the Author Ethan Mollick is a professor of management at Wharton, specializing in entrepreneurship and innovation. His research has been featured in various publications, including Forbes, The New York Times, and The Wall Street Journal. He is the creator of numerous educational games on a variety of topics. He lives and teaches in Philadelphia, Pennsylvania.

You must read the following NVHC Sign-in Sheet Statement/Liability Disclaimer, https://nvhc.com/signin.pdf and then answer the question that you will see when you RSVP with "I accept" to be permitted on the hike. **Hike Overview:** This will be a 10-mile hike in and around Great Falls, Maryland, with about 800 feet of elevation gain. We will be hiking in the woods, not along the towpath. The trail can be rocky and uneven at times. Plan for some small hills and stream crossings. I hike at a moderate to fast pace of 2.5-3.0 miles per hour. **Park Entrance Fee**: None. **Trailhead:** The trailhead / hike starting location is at the far end of the upper parking lot across from the Old Angler's Inn. The restrooms at the other end (by the entrance) should be open. **Duration**: Approximately 5 hours **Route**: We’ll hike up to the Gold Mine Loop, circle around the east side, make our way down to the towpath, and then visit Olmsted Island for a lovely view of the falls. Once back at the towpath, we'll head past the visitor center and parking lot north to the Ford Mine Loop. After finishing this loop, we'll retrace our steps to the visitor center, hike along the Overlook Trail and around the Gold Mine Loop and back to the parking lot. Highlights include: the falls overlook, Civil War trenches, gold mine sites, and a pretty stream. **Type**: Our path will be roughly in the shape of a barbell. **Hiking Speed**: We'll hike at a speed of 2.5-3.0 mph (moderate to fast). **Pets:** Dogs are permitted on this hike in accordance with NVHC's dog policy: [https://tinyurl.com/nvhcdogpolicy](https://tinyurl.com/nvhcdogpolicy). The dog must be on a leash, and you must let the hike leader know in advance. Dogs are not allowed on the boardwalk to Olmsted Island, so any hikers with a dog would have to wait at the entrance while the group goes to view the falls. **Map of Hiking Trails at Great Falls, Maryland:** [https://www.nps.gov/choh/planyourvisit/upload/Great-Falls-Hiking-Map.pdf](https://www.nps.gov/choh/planyourvisit/upload/Great-Falls-Hiking-Map.pdf)

Discover the path to stress management, life's tranquility, and self-improvement through Heartfulness Meditation. Embrace relaxation, meditation, and emotional detoxification practices to unlock your best self. Join our free sessions every Sunday at 8 AM at VA. Experience the profound benefits of these simple yet powerful practices. Commit to a few months of meditation and witness the transformative impact firsthand. We eagerly await your presence at these enlightening sessions.

It’s hard to believe our group is 1 year old now! Let’s have another great meetup to enjoy the hobby with each other and have a IFP&P birthday celebration! Note: location may change.

**Studio 151 Learning Lab: Photography Foundations Series — Lighting Basics** Photography starts with light—but understanding how to actually *use* it is where most people get stuck. This session is designed to simplify lighting in a way that makes sense for real-world shooting. Instead of a traditional lecture, we’ll learn through curated video content, pausing to break things down, ask questions, and connect it to real studio work. You’ll see how lighting works, talk through it as a group, and then have the chance to explore it hands-on. *** **What We’ll Cover** * Natural light vs. studio light (and when to use each) * Simple one-light setups that work * How light direction shapes your image * Creating clean, consistent results *** **What to Expect** * Guided video learning (watch + pause + discuss) * Real-time breakdown of concepts in plain language * Hands-on opportunities to experiment * Open networking with other photographers * Snacks will be available, bring a bagged lunch if you like! *** **You’ll Leave With** * A clearer understanding of how light works * Simple setups you can try immediately * More confidence in any shooting environment *** Free to attend (limited spots)

Members of the public are invited to view the wonders of the universe through the telescopes of NOVAC volunteers at the Smithsonian's Udvar-Hazy Center in Chantilly, VA. You do not need to be a member of the club or own any astronomical equipment to attend. Telescopes will be provided by the Smithsonian and pre-approved members of the NOVAC. No other personal telescopes are permitted at the event. The event will take place on the bus parking lot of the museum. **Please park your vehicle at the south end of the main visitors lot and follow signs and red lights to the observing site. As a reminder, parking during the event is free.** Have a cosmic question? One of NOVAC's astronomers or museum staff will be happy to help you. As the sky gets dark, be prepared to enjoy the wonders of the night sky! Don't forget to dress warmly. Please check the weather forecast. For lighting, cover a flashlight in red cellophane (the darker the better). Bring along water to keep hydrated. Note: This outdoor event is weather-dependent and may be cancelled because of significant cloud cover or precipitation.

Francis Hutcheson (1694-1746) was a pivotal early figure of the Scottish Enlightenment, a movement which strongly embraced empiricism and concentrated on the study of human nature and the relationship of individuals and society. Born in Ireland to a line of Scottish Presbyterian ministers, Hutcheson was educated by dissenting Irish Presbyterians in Ulster before matriculating at the University of Glasgow, where he studied philosophy and theology. In 1719 he was licensed to preach in Ireland, but rather than adopting the more traditional views of his forefathers, he gravitated toward the tolerant and liberal “New Light” Presbyterianism. Instead of further pursuing the ministry for which he had trained, he put his efforts into founding a dissenting academy in Dublin—a successful venture that occupied him for the next ten years. While teaching in Dublin, he moved in intellectual circles, and it was there that he wrote the four early treatises—collected into two books, the *Inquiry* of 1725 and the *Essay* of 1728—that quickly established his reputation as a philosopher. On being appointed chair of moral philosophy at his alma mater, he left Ireland for Glasgow in 1729. Contemporaries described Hutcheson as a popular and animated professor—the first at Glasgow to deliver lectures in English rather than exclusively in Latin. His most famous student was Adam Smith (enrolled 1737-40). Hutcheson's influence on Scottish thinkers was considerable. With his emphasis on the primacy of feeling over reason in our moral perceptions, he inspired David Hume’s moral sentimentalism. His analysis of natural rights and property in the *Inquiry* (Treat. II Sect. VII) as well as in his later works directly influenced Smith. The Scottish school of common sense realism derived partly from Hutcheson's explication of moral sense theory. His influence also made its way to colonial America, where his works were included in college curricula beginning in the mid-1700s. John Adams and other signers of the Declaration of Independence are known to have read Hutcheson. In the *Inquiry*, he takes up Locke’s epistemology of sense perception and broadens it into a theory of the “internal senses”—faculties of perception as powerful as the commonly designated five external senses. Elaborating Lord Shaftesbury’s notion of a “moral sense” and the earl's analogy between beauty and virtue, Hutcheson divided his *Inquiry* into a discussion of the sense of beauty and of the paramount moral sense—both being internal senses which operate without depending on mediation by the will or reason. Like Shaftesbury and the philosopher Richard Cumberland, Hutcheson held a strong distaste for the Hobbesian worldview. In the vein of the former two, he promoted a vision of humans as naturally benevolent and innately interested in the welfare of others, maintaining that others’ good brings us no less pleasure than our own good. Notably, he also sowed the seeds of utilitarian thought with his phrase “the greatest happiness for the greatest numbers” (Treat. II Sect. III). **Main Reading** The reading below is available at the Online Library of Liberty: * The [Inquiry](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004), comprising the first two of Hutcheson's four early treatises (we are reading the 1726, or 2nd edition, of the book): read the [Preface](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_head_019) and Treat. I: Sections [I](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_051), [II](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_071), [III](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_088) (Art. [IV](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_101) is optional), ([V](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_109) is optional), [VI](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_137), [VII](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_158), [VIII](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_165); and Treat. II: [Intro](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_head_032) and Sect. [I](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_181), [II](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_205), [III](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_228) (Art. XI, XII until “Intention, foresight” optional), [IV](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_258), [V](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_275), [VI](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_296), and especially [VII](https://oll.libertyfund.org/titles/leidhold-an-inquiry-into-the-original-of-our-ideas-of-beauty-and-virtue-1726-2004#lf1458_label_324). * Hutcheson's lecture upon his appointment at Glasgow, “[On the Natural Sociability of Mankind](https://oll.libertyfund.org/titles/hutcheson-logic-metaphysics-and-the-natural-sociability-of-mankind#lfHutcheson_head_238)." The first 3 paragraphs, until footnote 10, are optional. * The beginning of the fourth treatise [Illustrations](https://oll.libertyfund.org/titles/garrett-an-essay-on-the-nature-and-conduct-of-the-passions-and-affections-1742-2002#lf0150_label_230), Sect. [I](https://oll.libertyfund.org/titles/garrett-an-essay-on-the-nature-and-conduct-of-the-passions-and-affections-1742-2002#lf0150_head_019), and Sect. [IV](https://oll.libertyfund.org/titles/garrett-an-essay-on-the-nature-and-conduct-of-the-passions-and-affections-1742-2002#lf0150_label_296). Note that the ebook page on OLL can take a few moments to load. **Secondary resources** [IEP - Hutcheson](https://iep.utm.edu/hutcheso/) [SEP - Hutcheson](https://plato.stanford.edu/entries/hutcheson/) Liberty Fund: Editor’s [Intro to Inquiry](https://oll.libertyfund.org/pages/hutcheson-on-liberty-and-happiness). [SEP - Scottish 18th C. Philosophy](https://plato.stanford.edu/entries/scottish-18th/) [Wiki - Scottish Enlightenment](https://en.wikipedia.org/wiki/Scottish_Enlightenment) [Hutcheson and private property](https://www.adamsmithworks.org/documents/matson-hutcheson-property-virtue-march-2022) Routledge: [1](https://www.rep.routledge.com/articles/biographical/hutcheson-francis-1694-1746/v-1/sections/life-and-works-43333), [2](https://www.rep.routledge.com/articles/biographical/hutcheson-francis-1694-1746/v-1/sections/the-foundations-of-morality-and-the-moral-sense), [3](https://www.rep.routledge.com/articles/biographical/hutcheson-francis-1694-1746/v-1/sections/practical-ethics-and-influence)

**NOTICE: The park is open until 8:45 PM for Sunset Closing** [https://www.novaparks.com/parks/meadowlark-botanical-gardens/events/sunset-in-the-gardens-845pm-closing](https://www.novaparks.com/parks/meadowlark-botanical-gardens/events/sunset-in-the-gardens-845pm-closing) **Sunset is 8:25 PM** Fees: $5 for ages 6-17 & ages 55+, $9 for ages 18-54, and free for ages 5 & under We will meet at the visitor center. Bring Water, Tripod, comfortable shoes, fully charged batteries, and empty cards There is no specific route in this park. Folks are free to wander around the trails in the park at their own pace. Check out Rob Trek's video from May 16, 2021: https://youtu.be/QwNR_TuxM4Y For dinner, after the field trip around 8:30 PM, we will head to Anita's New Mexico Style Restaurant, 521 Maple Ave E, Vienna, VA 22180 https://maps.app.goo.gl/3T7gw87tjvVuwDT96 Share only your very best, most interesting shots after the field trip, and keep it down to between 5 and 10 photos. Beauty, conservation, education, and discovery flourish throughout the year at this 95-acre complex of large ornamental display gardens and unique native plant collections. Walking trails, lakes, more than twenty varieties of cherry trees, irises, peonies, an extensive shade garden, native wildflowers, gazebos, birds, butterflies, seasonal blooms, and foliage create a sanctuary of beauty and nature. [https://www.nvrpa.org/park/meadowlark_botanical_gardens/](https://www.nvrpa.org/park/meadowlark_botanical_gardens/) By sending in an RSVP and joining this meetup event hosted by the Virginia Beltway Photography Meetup, I am also agreeing to the terms of the following release and waiver of liability, which shall be binding on my heirs, executors, administrators, successors, and assigns. In consideration of my (and my child’s) participation in the Virginia Beltway Photography Meetup, I do hereby release, discharge, and hold harmless the Organizer, its members, officers, directors, employees, and the leader(s) of this event from any and all liability by reason of any damage, loss, expenses, or injury arising from my (and my child’s) participation in this event, including that caused solely or in part by the fault of any and all of the above-named parties.

Everyone’s heard of book clubs where the group reads the same thing and gets together to discuss, which is great… if you have time and interest in whatever’s chosen. This is a different type of book club where you bring whatever you’re currently or recently reading (or just a book you’re super excited about) and talk about it with fellow book lovers. We’ll start with people arriving/ordering food between 615-645, then go around and introduce ourselveslves and give a very brief synopsis of what we’re reading and why we’re excited (or not!) about it. Then devolve into informal conversations until people need to head out. The goal Is to create community and connections in a group of strangers - to facilitate this please make sure you have at least a clear first name on your profile. Upside on Moore has a great selection of food you can order from your phone or at the kiosks. There’s also a bar with happy hour, something for everyone! Arrival tips: if you’re taking the metro, it’s the building above the Rosslyn exit. If you’re driving, you can park in the public lot under the food hall (entrance from the one way bus street) and validate parking after 6!

[Profs and Pints Northern Virginia](https://www.profsandpints.com/washingtondc) presents: **“The Physics of Baseball,”** with Scott Paulson, professor of physics and interdisciplinary liberal studies at James Madison University. [Advance tickets: $13.50 plus sales tax and processing fees. Available at [https://events.ticketleap.com/tickets/profsandpints/nv-physics-of-baseball](https://events.ticketleap.com/tickets/profsandpints/nv-physics-of-baseball) .] Profs and Pints is offering baseball fans an even bigger treat than Cracker Jack, an exploration of the physics underlying their beloved sport. Professor Scott Paulson, who regularly teaches introductory physics classes that make the physics behind real-world phenomena accessible to all, will discuss the forces and phenomena that come into play in baseball during pitching, batting, and fielding. He’ll toss you basic physics concepts that help explain how baseball’s routine plays got to be that way, and he’ll explain what’s going on in some situations where the laws of physics seem to be violated by what’s happening on the field. Ever wondered why curveballs curve or knuckleballs behave so strangely? You’ll learn how Newton’s laws and the Magnus force explain how pitchers get drastically different results from subtle differences in their releases. Curious about what exactly the “sweet spot” of the bat is? Ever wondered how big an advantage batters get from the thin air of Mile High Stadium? We’ll explore the physics of the batted ball, examining the phenomena of waves and analyzing the interaction of ball, bat and batter with the help of high-speed video. During one of the more exciting scenarios in a baseball game—the close play at the plate—fans often see outfielders throw to an infielder rather than directly to home. We’ll look at the pros and cons of this relay play, known as a “cut-off,” in the context of the physics of projectile motion. Finally, we will also look into high-profile cheating scandals involving corked bats and doctored balls. Dr. Paulson will present models to explain how these alterations to the equipment can benefit the batter and pitcher respectively, and he’ll discuss how much these models are backed up by data. These few hours in a brewpub will forever enhance your enjoyment of time at the ballpark. (Doors: $17, or $15 with a student ID. Listed time is for doors. The talk starts 30 minutes later.) Image: Photo by Tage Olsin / Wikimedia Commons