figure at 2482 (Stanford copy, mutilated in scanning; cropped), from Discussion (at 2475-2485) of H. C. Vensano his “Pulsations in pipe lines, as shown by some recent tests,” in Proceedings of the ASCE, 43:8 (October 1917) : 1593-1643 same, but UC copy, at hathitrust; same figure, unmutilated, ditto.

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In order to avoid making this paper too long, the writer assumes that the reader is familiar with certain literature on the subject already available. In fact, before examining this paper, he should read at least two papers to which the writer refers, particularly “Water-Hammer”, by Miss O. Simin*, and also that part of a paper entitled “Penstock and Surge-Tank Problems”,† by Minton M. Warren... applying to pressure due to slow or ordinary gate closures, together with (and especially) the discussion on that paper by the writer. ex General description of Experiments, p 1596

* Proceedings, American Water Works Assoc., 1904, p. 341. This is a review and elaboration of the article by Professor J. Joukovsky in Memoirs, Imperial Academy of Sciences, St. Petersburg. 1897, Vol. IX.  ◾ at hathitrust; commences with “Errata and Remarks,” from which the epigram above. † Transactions, Am. Soc. C. E. Vol. LXXIX, p. 238.  ◾ at hathitrust

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CRO-MAGS  1987

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This illustration shows how the planet HAT-P-2b, left, appears to cause heartbeat-like pulsations in its host star, HAT-P-2. Credits: NASA/JPL-Caltech

(NASA)  Spitzer Hears Stellar 'Heartbeat' from Planetary Companion

A planet and a star are having a tumultuous romance that can be detected from 370 light-years away.

NASA's Spitzer Space Telescope has detected unusual pulsations in the outer shell of a star called HAT-P-2. Scientists' best guess is that a closely orbiting planet, called HAT-P-2b, causes these vibrations each time it gets close to the star in its orbit.

(...) The star's pulsations are the most subtle variations of light from any source that Spitzer has ever measured. A similar effect had been observed in binary systems called "heartbeat stars" in the past, but never before between a star and a planet.

Weighing in at about eight times the mass of Jupiter, HAT-P-2b is a relatively massive planet. It's a "hot Jupiter," meaning an exoplanet that is extremely warm and orbits its star tightly. But this hot Jupiter is tiny in relation to its host star, which is about 100 times more massive. That size difference makes the pulsation effect all the more unusual (For comparison, our sun is about 1,000 times more massive than Jupiter).

Pulsations: France Pavilion at Expo 2025 Celebrates Human Connection Through Art and Immersion

Step into the heart of France at Expo 2025 Osaka! Pulsations—a poetic, immersive experience by GSM Project and visual artist Justine Emard—invites you to feel the rhythm that connects us all. Inspired by the Japanese legend of the red thread of fate, this multi-sensory journey explores love, technology, nature, and heritage through synchronized sound, light, and movement.

From Rodin to digital art, from Notre-Dame to Japanese shrines—discover how art and emotion pulse as one. https://www.indiaartndesign.com/pulsations-france-pavilion-at-expo-2025-celebrates-human-connection-through-art-and-immersion/