From this episode, we can perceive the future is unpredictable and stun how enormously
the technologies transformed our world.
Laser Virtual Keyboard/Projection Keyboard.
The laser projected through the filter shaped like the keyboard.
The lamp magnified and focused it on the surface.
The infrared sensor detected the motions of the user's fingers and communicate the signal
wireless to the receiving device.
Inside the display screen, millions of tiny capsules, each about diameter of human hair suspended in the liquid fluid.
Each capsule had either negative charge (black side) or positive charge (white side).
Magnetic field causing the charges to change.
Zipper.
Almost kitchen gadgets were defined in 1920's, you can find the simple technical gadget
that transformed and forged our modern society.
Toaster.
Electric Kettle.
Waffle Maker.
Mixer.
Fans
Hair Dryer.
Shavers.
Electric Iron/Clothes Iron.
Water Jetpack.
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