Here's a breakdown:
* If you mean physically breaking: Many materials allow light to pass through without physically breaking. Examples include:
* Glass: The most common example. It's transparent, meaning light passes through easily.
* Water: Water is also transparent, allowing light to travel through.
* Air: We can see through air because it allows light to pass.
* Plastic: Some plastics are transparent, like clear acrylic or polycarbonate.
* If you mean scattering or changing direction: This is a bit more complex.
* Opaque materials: These materials don't allow light to pass through at all. Examples include wood, metal, and thick walls.
* Translucent materials: These materials let some light pass through but scatter it, making objects behind them blurry. Examples include frosted glass, waxed paper, and thin fabrics.
* Transparent materials: These are the ideal for letting light pass without scattering. Examples include clear glass, water, and air.
So, to answer your question directly:
* If you want a material that won't physically break when light shines through, many materials will work.
* If you want a material that won't scatter or change the direction of the light, then transparent materials like glass, water, and air are your best bet.