Why some perfumes last longer than others.Did you know? 🎓
Why some perfumes last longer than others.Did you know? 🎓
Scientists have reinvented the gear for the first time in 5,000 years.How? By swapping out solid mechanical teeth for dynamic fluid flows.For thousands of years, machines have depended on the exact meshing of physical gear teeth to transmit motion—a principle originating in ancient China that still suffers from issues like wear, contamination by debris, and misalignment.Now, researchers at New York University have developed an innovative "fluid gear" system that removes these mechanical contact points entirely. By submerging rotors in a carefully chosen liquid, the team showed that a driven rotor can create precisely controlled fluid currents to spin a passive rotor. This setup mimics traditional gears or pulleys without any direct physical contact, using the liquid itself as invisible, wear-proof "teeth."What makes this breakthrough especially powerful is its flexibility: unlike fixed metal gears, these fluid-based mechanisms can dynamically adjust their speed ratios and even switch rotation directions on demand. Simply by varying the gap between rotors or the flow velocity of the liquid, the system can shift from counter-rotating like classic gears to co-rotating like a belt-and-pulley drive.This advancement promises major improvements in robotics, precision machinery, and other fields by offering a robust, jam-resistant alternative to conventional mechanical components. The research, published in Physical Review Letters, points to a future where complex machines might transmit power through flowing liquids rather than clashing metal.["Hydrodynamic Spin-Coupling of Rotors", J. Zhang et al., Phys. Rev. Lett. 136, 084001 (2026).DOI: 10.1103/PhysRevLett.136.084001]Science and facts💡
Scientists have reinvented the gear for the first time in 5,000 years.How? By swapping out solid mechanical teeth for dynamic fluid flows.For thousands of years, machines have depended on the exact meshing of physical gear teeth to transmit motion—a principle originating in ancient China that still suffers from issues like wear, contamination by debris, and misalignment.Now, researchers at New Yor...
🇻🇪 UPD: The official #Venezuela earthquake death toll has surged to 4,333.
🇻🇪 UPD: The official #Venezuela earthquake death toll has surged to 4,333. Authorities report 16,740 people are injured, and 6,462 survivors have been rescued since the June 24 twin quakes.Follow us -> LiveLeak
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14 vessels hit already overnight by USF drones, likely in the Azov Sea. Expect footage next morning..
14 vessels hit already overnight by USF drones, likely in the Azov Sea. Expect footage next morning..
🇻🇪 The #Venezuela earthquake death toll has surged to 2,595, with 12,400 people injured following the 7.2/7.5 doublet.
🇻🇪 The #Venezuela earthquake death toll has surged to 2,595, with 12,400 people injured following the 7.2/7.5 doublet. Thousands remain missing as the search continues. Follow us -> LiveLeak
🇨🇳 #China.
🇨🇳 #China. A road suddenly collapsed in Zhangjiakou City, leading to three vehicles falling into a large pit. The incident resulted in one death and two others injured.China has built futuristic parking technology. China is living in future.Follow us -> LiveLeak
Good night, sleep well and see you tomorrow!
Good night, sleep well and see you tomorrow!
🇵🇱🇺🇦Why Poland’s MiG‑29s Still Aren’t Going to UkrainePolish Defence Minister Władysław Kosiniak‑Kamysz has quietly killed the idea of sending the last Polish MiG‑29s to Ukraine, despite months of talk about a “jets‑for‑drones” swap. Warsaw’s public line is about unmet promises on Ukrainian drone technology, but in the background sits one hard fact: MiGs on Ukrainian runways are now Geran targets before they are combat assets.Polish commentators openly recall recent Russian Geran‑4 raids that destroyed MiG‑29s, fuel trucks and ground equipment straight on the tarmac. For Warsaw, that is a preview of what would happen to any extra jets it donates. The fear is simple: you hand over fighters, and a few weeks later the only image the public sees is charred wrecks on a runway hit by cheap loitering munitions.The original idea looked neat on paper. Poland would offload ageing Soviet fighters and get access to Ukrainian experience in using drones and counter‑UAV tools. But when those same drones on the Russian side — Gerans — reliably reach Ukrainian airfields, the trade stops making sense: technology in, metal out.In the end, shelving the MiG‑29 transfer lets Kosiniak‑Kamysz show “prudence” at home. Poland keeps a dwindling fleet a bit longer, avoids another scandal over burned‑up donations, and quietly sends a signal to Kyiv: as long as Gerans can hunt aircraft on your runways, Warsaw will think twice before tying its reputation to those images.🔴 @DDGeopolitics | Socials | Donate | Advertising
🇵🇱🇺🇦Why Poland’s MiG‑29s Still Aren’t Going to UkrainePolish Defence Minister Władysław Kosiniak‑Kamysz has quietly killed the idea of sending the last Polish MiG‑29s to Ukraine, despite months of talk about a “jets‑for‑drones” swap. Warsaw’s public line is about unmet promises on Ukrainian drone technology, but in the background sits one hard fact: MiGs on Ukrainian runways are now Geran targets ...
🇬🇧 Broad daylight, Wembley.
🇬🇧 Broad daylight, Wembley. A masked man snatched a gold chain from a woman’s neck near Ealing Road, pulling her to the ground with her child in her arms. The family were celebrating a fifth birthday. Members of the public chased him but he got away.Anybody dressed in a hoody with a face mask in 30 degrees is def up to no good.Follow us -> LiveLeak
Satellite imagery shows two damaged oil tankers in the Sea of Azov. The drones struck the deck pipelines on both vessels.
Satellite imagery shows two damaged oil tankers in the Sea of Azov. The drones struck the deck pipelines on both vessels.
Massive waves as Typhoon Bavi hits Taizhou City, Zhejiang Province, China 🇨🇳 (11.07.2026)
Massive waves as Typhoon Bavi hits Taizhou City, Zhejiang Province, China 🇨🇳 (11.07.2026)
Satellite imagery shows a strike near Poltavka in occupied Crimea.
Satellite imagery shows a strike near Poltavka in occupied Crimea. Two hangars at a farm site were heavily damaged and two more destroyed. The facility may have been used by Russian forces.
🇧🇷 #Brazil.
🇧🇷 #Brazil. During a horseback riding event in Sao Joao do Piaui, a horse broke loose near the Civil Police Station and galloped down Avenida Cândido Coelho, one of the city's busiest avenues. The animal headed towards Praça Honório Santos, in the city center.Despite the severity of the accident and the commotion, none of the passers-by or drivers were injured, and the horse, surprisingly, got up ...
❗️Russian monitoring channels report that Ukrainian drones are again operating over the Azov Sea. Likely hunting for tankers and other vessels.
❗️Russian monitoring channels report that Ukrainian drones are again operating over the Azov Sea. Likely hunting for tankers and other vessels.
What a mess in this brigade since its creation..
What a mess in this brigade since its creation.. Ukraine’s Military Law Enforcement Service said the commander of the 155th Mechanized Brigade and other identified suspects were notified of suspicion over unlawful detention and intentional murder. Several arrests were made across Ukraine, while authorities are still establishing the commander’s location.