Ever wonder how your finger can magically control your smartphone screen? We explain in this episode of SciShow.
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A type of touch screen I have used is an old IBM one for their cash registers. It works by having a vertical and horizontal laser grid with sensors, and when you disrupt the grid, it knows an x and a y to click. Its neat, if a bit bulky and prone to error.
thanks for this video ... my questions that if touch using by any conduct material..its should be work right... but i tried operate to the screen by conducting material like bold screw
its dosn,t works..
I have nerve issues in my extremities. After having a nerve conduction study done on my muscles i learned that my muscles dont produce much electricity. Is this why sometimes my numb fingertips don’t seem to make the connection i am trying to make on a touchscreen?
People love saying humans are stupid, but I'm often baffled by how clever human inventions have become. Figuring out electricity started a massive revolution, but from simple circuits of DC power, to AC power, to cathodes and diodes, onward to transistors and microchips it's incredible. And that's only the beginning 0.0....If you have taken the time to learn about how transistors work, I encourage it. It's impossibly clever and without them cell phones wouldn't exist.
Who on Earth sweats like THAT!? (see 2:53)... *remembers Airplane!* nevermind...
BTW, My fingertip hurts already for so many tapping and slidding on my smartphone, well, more like they got very sensitive despite I always tap softly. I know you said at 2:28 that the electricity doesn't flow through the finger, but my fingers tell a really different story after 2 years of constantly using my smarthphone...
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