Transparency allows light to pass through a material, which is useful for windows, lenses, and screens. Materials like glass and clear plastics are chosen for applications requiring visibility and illumination.
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Metals are suitable for construction because of their strength, durability, and ability to withstand heavy loads. They are also malleable and can be shaped into various forms, making them ideal for structural elements.
Rubber is used for tires, seals, and footwear due to its flexibility and elasticity. It provides grip, cushioning, and protection, making it essential for various applications in everyday products and machinery.
Tape and rod measure length like a scale but are more flexible and suited for different contexts. “Char angula” refers to an old measurement unit, meaning “four fingers” or roughly 7-10 cm, used in traditional contexts.
The meter is convenient for measuring lengths like a railway track, but not for smaller measurements such as the thickness of a book page. For small lengths, units like millimeters are more precise.