Theory Backgrounds | Page 4

Browse 202+ Theory Backgrounds to download free for any screen

You are looking at 202 Theory Backgrounds. Use one for a video call, a webinar backdrop or a recorded talk. You do not need an account to save one. Keep scrolling — the collection runs deeper than the first screen.

Five smiling cartoon characters from The Big Bang Theory standing together. — Theory Background — The Big Bang Theory Cartoonish Characters

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Blue digital background with floating binary code and glowing grid lines.

Theory
A woman in a red blazer stares directly at the camera against a red background.

Theory
Chalkboard covered in physics equations and portraits of Einstein and Hawking.

Theory
A glowing geometric crystal with a red circle center on a gradient background.

Theory
$Businesswoman using calculator and phone at office desk with financial charts. — Theory Background$
Businesswoman using calculator and phone at office desk with financial charts.

Theory
Solid pink background for wallpaper use.

Theory
Futuristic dome building with palm trees and city traffic at dusk.

Theory
Scientific lab equipment with colorful liquids and molecular models on a reflective surface.

Theory
Woman in robes watching cats play with floating golden orbs under a cloudy sky.

Theory
Steins;Gate anime poster with three characters and glowing elements.

Theory
A stylish K-pop artist with platinum hair and chains against a fiery backdrop.

Theory
$Isometric digital icons for education science and technology connected to a laptop. — Theory Background$
Isometric digital icons for education science and technology connected to a laptop.

Theory
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Two men posing with peace signs under decorative yellow flowers on ceiling.

Theory
An academic article explaining intrinsic and extrinsic literary criticism theories.

Theory
Futuristic armored warrior fighting in a neon city with red blades and fire.

Theory
Futuristic city under construction with cranes and skyscrapers in black and white line art.

Theory
People walking and sitting in a modern architectural plaza under bright daylight.

Theory
Corporate timeline infographic highlighting key business phases from 1990 to 2020.

Theory
A 3D rendered molecular model with black spheres and silver rods on a dark blue background.

Theory
Hand holding glowing digital globe with floating tech icons.

Theory
A single illuminated lightbulb hanging among unlit bulbs in a dark blue space.

Theory
$Person studying math on laptop with pencil and notebook at wooden desk — Theory Background$
Person studying math on laptop with pencil and notebook at wooden desk

Theory