Chapter Three - How We Interact With It – Using Energy Without Even Noticing

CHAPTER THREE

How We Interact With It – Using Energy Without Even Noticing

YOU MIGHT NOT realize it, but you’ve been interacting with energy all day.

When you open your eyes in the morning, light hits your retinas—energy from the sun or a bulb. When you speak, sound energy leaves your mouth. When you text someone, your phone uses electrical energy to light up, send signals, and run its little computer brain. Energy is the invisible handshake between you and the world.

Here’s how it shows up in everyday life:

Eating food? That’s stored chemical energy. Your body breaks it down and uses it to move, think, blink, and breathe. Every bite is basically fuel.

Walking or running? That’s you converting that fuel into mechanical energy—energy of movement. Your muscles are energy converters.

Charging your phone? You’re moving electrical energy from the wall to the battery. That power likely started in a power plant, which may have burned fuel (chemical energy), spun a turbine (mechanical energy), and sent current down power lines (electrical energy). That’s a full energy tour right there.

Listening to music? The electrical signal gets turned into vibration by your speaker, which turns into sound energy and hits your ears.

Turning on a lamp? You’re sending electrical energy into a filament or LED. That gets converted into light and heat. Flip, flow, glow.

Even your thoughts are energetic. Tiny electrical pulses travel across neurons in your brain, creating what we call thoughts, decisions, feelings. It’s complex—but it’s still energy.

We interact with energy constantly. Often without knowing it. It’s not some mystical force—though it can feel that way sometimes. It’s just the basic rhythm of being alive in a physical world. Every action you take is energy moving. Every device you use. Every heartbeat. Every breath.

You don’t have to see it to use it. You’re already doing it.