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VINTERIX🇺🇸 on Instagram: "Three methods: • Simple inversion — ~15 seconds, bubbles slow the flow. • Vortex spin — ~9 seconds, centered stream. • Straw for air — ~4 seconds, no bubble resistance. The straw trick follows Bernoulli’s principle: low pressure creates an air channel, preventing backpressure. It’s a viral experiment since 2016, proving how everyday physics can amaze and teach. 📺 Follow us for more simple yet brilliant science experiments"

Unfolded Physics on Instagram: "Leonardo da Vinci did more than paint the Mona Lisa. He studied the human body in incredible detail. In his notebooks, he observed that blood does not flow straight through the heart. Instead, it moves in spiral, vortex-like patterns inside the ventricles. He built glass models of the aortic valve and used seeds in water to visualize the swirling motion. Modern cardiology has confirmed his observations. This vortex flow helps the heart pump efficiently and reduces