These Window Curtains Use Sand When you see it you will ask yourself why you didn’t invent it and why was this not commercialized before. Facebook Prev Article Next Article Inventions Checkout these cool gadgets... Related Posts Scientists Invent Gel Controlled by Light Qeeze – Touchscreen Detects Which Part of Finger You Use Window Switching from Transparent to Mirror in 5 Seconds Instantly Measuring Sugar Content of Produce Iron Man Becoming Real (Richard Browning, Gravity Industries) Scientists Create First Computer Chip With Integrated Biology on Molecular Level