March 14th...giornata della matematica, Pi Greco day. Perchè non utilizzare le cifre di π per costruire una spirale, la spirale di Archimede, da appendere in classe o nel corridoio? Se appesa sopra un termosifone o un'altra fonte di calore, diventa una divertente attività ed esperimento con cui scoprire alcune caratteristiche dell'aria: la spirale ruota e si muove perchè spostata dall'aria calda. L’aria calda è più leggera dell’aria fredda perché meno densa e sale verso l’alto. https://maestramonica.it/pi-greco-day-la-spirale-di-archimede-matematica/

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Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Unedited at normal speed. I didn't quite understood the need for a razor blade but without one I still see the flow of air. For me, the razor blade just makes the dot of light smaller(?) If anyone can clarify me what the razor blade really does and where it should be placed (in the source of light or in the camera) I'd really appreciate. Also important to note that this is AWESOME to look with the naked eye but almost the dimmest light can blind you. I covered a tiny LED torch with aluminum foil and punctured a hole with a sewing needle, on the side! so that the LED doesn't bright directly through the hole. Take care with the eyes!!

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Sailing through Plum Gut Long Island #longislandsound #sailing

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J109 Going to Red was locked in close combat with the several of the IRC 1 fleet in the first of the Tobermory of WYHW 2023. The wind was ranging between 10 and 15 knots on the first beat with J109 Going to Red crossing just behind the Maxi 1300 "Maximoose Too" GBR9333C early on the first best. Maximoose Too lead from start to finish in this race with Going to read coming in 6th place. The bottom up boats team had a great time at WHYW, the weather was not great but the sailing and the social life more than made up for the damp conditions. If you are enjoying our shorts actions why not subscribe to our channel to catch up with all the actions.

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No te pierdas este emocionante vídeo que se estrenará el domingo 10 de septiembre de 2023 a las 00:00 horas de España. Unas prácticas de vela de dos días en las que empezamos la navegación sin saber nada de vela, sin conocernos entre la tripulación y en el segundo día ya hacemos unos bordos perfectos con unas viradas impresionantes. Ven a tu Masterclass Sailing Txemacapitan Si te ha gustado el vídeo 𝐒𝐮𝐬𝐜𝐫í𝐛𝐞𝐭𝐞 𝐚𝐥 𝐜𝐚𝐧𝐚𝐥 👍 Así nos ayudas a generar más contenido para tí,... los amantes de la navegación y del mar. Y si le das a la campanita 🔔 ya alucino,... se nos caerán unas cuantas lagrimillas. También nos puedes seguir en otras plataformas: 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦 - https://www.instagram.com/sailingtxemacapitan_oficial 𝐓𝐢𝐤 𝐓𝐨𝐤 - https://www.tiktok.com/@sailingtxemacapitan 𝐅𝐚𝐜𝐞𝐛𝐨𝐨𝐤 - https://facebook.com/SailingTxemacapitan 𝐋𝐢𝐧𝐤𝐞𝐝𝐢𝐧- https://www.linkedin.com/in/txema-iglesias

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