Science Of Everyday Things -

When you touch it, you complete an electrical circuit, causing a tiny drop in the electrostatic field at that specific point. The phone’s processor calculates the coordinates of that drop to know exactly where you pressed. 5. The Friction of Walking Every step you take is a lesson in . To move forward, you push backward against the ground.

Friction between your shoe and the floor prevents your foot from sliding. On ice, the friction coefficient drops drastically, which is why your "equal and opposite reaction" results in a fall rather than a step. SCIENCE OF EVERYDAY THINGS

Microwaves don't heat food from the "inside out" in the way many believe. Instead, they use . When you touch it, you complete an electrical

These molecules flip back and forth billions of times per second to align with the field. This rapid motion creates friction, which generates the heat that cooks your leftovers. 3. The Biology of Tears (Cutting Onions) The Friction of Walking Every step you take is a lesson in

Volatile organic compounds (VOCs) are released by heat, hitting your olfactory receptors before you even take a sip.

This reacts to form a gas called syn-propanethial-S-oxide . When this gas hits the water layer on your eyeballs, it turns into a mild sulfuric acid. Your brain then triggers "reflex tears" to flush the irritant away. 4. The Engineering of a Touchscreen