What makes an object transparent?
What makes materials transparent?
How is glass made transparent with non transparent components? Is transparent a color? What is transparent color? Why is sand not transparent but glass is transparent? What is translucent powder? What does it do? What are non-metallic materials? What are some examples? What is plastic insulation? Why are metals shiny? How are smart materials made? If glass is considered a solid material - how can we see through it? Different types of materials? Which is the most shiny material? What are non-porous materials? What are some examples of it? What are incandescent solids? Which material is less (time) durable: aluminium or plastic foil? How are opaque tights different from nylon tights? What are the pros and cons of using opaque envelopes? Why are metals mostly ductile while ceramics are brittle at room temperature? What is more (time) durable: plastic film or aluminium foil? What are some element examples that are solids at room temperature? What are some examples of raw materials? What is soft material that can conduct electricity? Which material sticks to glass? What are examples of solids?  What material sticks to glass? How can you see through glass when it's a solid? What are raw materials? What are some examples? What is the difference between Scotch magic tape and Scotch transparent tape? What are ductile materials? Which is the most shiny material in the world?