A jam jar pulsejet engine is a simple yet fascinating demonstration of reactive propulsion. It works by igniting a fuel-air mixture inside a jar, usually methanol vapor mixed with air, which rapidly combusts and expands. The expanding gases rush out of the opening, creating thrust, while the sudden drop in pressure draws fresh air and fuel back in to repeat the cycle. This repeating cycle of ignition and refill happens many times per second, producing the distinctive pulsing sound that gives the

1K reactions · 30 shares | Tunay nga namang may advantages at disadvantages ang pagsasara ng Mahabang Tulay sa mag buses at iba pang uri ng saksakyan. Nabawasan ang dumadaan sa Poblacion, at the same time hassle nga laang sa mga commuters. Ngunit, naka-adjust naman agad ang ilan. Pero ang dalangin nating lahat ay maayos na nang tuluyan ang ilalim ng tulay na ito para maiwasan ang panganib. #sariaya | Sariaya Quezon | Facebook

7.6K views · 118 reactions | 'We had a public debate to discuss the advantages and disadvantages of galamsey on our lands with the miners and we agreed we don't want that on our lands' - This is the story of Jema, a community that resisted a Ghs1million bribe for galamsey on their lands. Watch full video here: https://youtu.be/zfqtmihZkQM #PointofView #StopGalamseyNow | Citi 97.3 FM | Facebook