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Articles by Benjamin Crowell
Free Physics Textbooks from Universities and Physicists
Introductory Physics First-year physics with or without calculus, plus lab manuals, problem books and a few century-old classics. 25books 01.01High schoolPDF Crowell wrote this series for his own classes at Fullerton College and has kept revising it for years. It runs from high school physics into the first year of university, and the Creative Commons license means you can copy it, print it and hand it out. 01.02High schoolPDF The standard algebra-based introduction, no calculus required.
From treadmill to trails: predicting performance of runners
Abstract Previous laboratory studies have measured the energetic costs to humans of running at uphill and downhill slopes on a treadmill. This work investigates the extension of those results to the prediction of relative performance of athletes running on flat, hilly, or very mountainous outdoor courses.
Temple Joint Venture, LLC et al v. Palomar Specialty Insurance Company
May 24, 2023 Filing 1 NOTICE OF REMOVAL by Palomar Specialty Insurance Company (Filing fee $402 receipt number ATXWDC-17476986), filed by Palomar Specialty Insurance Company. (Attachments: #1 Exhibit 1, #2 Exhibit 2, #3 Exhibit 3, #4 Exhibit 4, #5 Exhibit 5, #6 Civil Cover Sheet, #7 Supplement to Civil Cover Sheet)(Arnold, George) May 24, 2023 Case assigned to Judge Alan D Albright and CASE REFERRED to Magistrate Judge Derek T. Gilliland.
Sun-like star ruled out as source of mysterious WOW! signal
However, as Caballero pointed out in his study, 2MASS 19281982-2640123 wasn’t the only possible source of the WOW! signal. He highlighted another 66 stars in roughly the same direction as strong potential candidates. Caballero tells Astronomy that the recent radio telescope observations of 2MASS 19281982-2640123 were exactly what he’d hoped for when he carried out his initial study. “It was very exciting to learn that the SETI community heard me and took action,” he says.
Shoot Headbutt, by Freddy Ruppert
If you like Freddy Ruppert, you may also like:
Easy's Gettin' Harder Every Day (Iris DeMent), by Advance Base
released January 20, 2021 Written by Iris DeMent (c) 1993 Songs of Iris ASCAP Electric piano, gentle synth & vocals by Owen Ashworth Recorded & mixed by Owen Ashworth at Advance Basement Oak Park, IL November 18, 2020 Portrait of Iris DeMent by Owen Ashworth
The wow! signal: an alien missed connection?
Wow! Signal follow-ups Over the years, many other astronomers have followed-up on the Wow! Signal, either trying to explain it away or relocate it. But to astronomers like Shostak, the signal is really just one of many similar detections made over the years. “In those days, it was very common to pick up these kinds of signals just one time,” Shostak says. “Computers didn't have the power to do real time follow-ups.
Blockchain Innovations in the Energy Sector, Explained
For many observing and participating in the crypto industry, conversations that include “blockchain” and “energy” often revolve around the resources required to mine proof-of-work blockchains like Bitcoin and their environmental impact. In many ways, this is for good reason: Much of Bitcoin’s mining is done using cheap, coal-powered electricity in China.
Staking, Consensus and the Pursuit of Decentralization
Oh, the wonders of decentralized consensus — that dream of permissionless blockchains to be censorship-resistant, trustless, collaborative and egalitarian for a potentially global community of users. While lofty in ideals, consensus is foundational for each crypto network, which must agree upon that most basic question of who decides what on the network.
Crypto Lending, Explained
Unless you have been living in the dark, dark cave of purely traditional finance, you have probably at least heard of crypto lending — the trend opening up opportunity for crypto players big and small, and is powering Ethereum’s decentralized finance ecosystem to over $1 billion in locked value.
Exchanges instantáneos de criptomonedas, explicado
Incluso para los veteranos de la industria de la criptomoneda, el papel y la funcionalidad de los intercambios instantáneos de criptomonedas pueden ser desconocidos. Echanges como Changelly, Shapeshift y ChangeNOW no aparecerán en la lista de los mejores exchanges de CoinMarketCap, y el nombre en sí mismo no es muy descriptivo. Entonces, ¿qué es un exchange instantáneo criptomonedas?
Instant Crypto Exchanges, Explained
Even for crypto industry veterans, the role and functionality of instant crypto exchanges may be unfamiliar. You won’t see the likes of Changelly, Shapeshift and ChangeNOW on CoinMarketCap’s top exchanges list, and the name itself isn’t terribly descriptive. So what is an instant crypto exchange?
Bitcoin Options, Explained
An “option” is a type of derivative contract that gives the owner the option (not the obligation) to buy or sell an asset at a specified price (the strike price) within a predetermined time (the expiry date).
Pony, by Orville Peck
Streaming + Download Includes unlimited streaming via the free Bandcamp app, plus high-quality download in MP3, FLAC and more. Purchasable with gift card $10 Compact Disc (CD) + Digital Album A copy of Pony on CD Includes unlimited streaming of Pony via the free Bandcamp app, plus high-quality download in MP3, FLAC and more. ships out within 3 days Purchasable with gift card $10 Record/Vinyl + Digital Album A copy of Pony on classic black vinyl.
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