Q.2 Define the following terms: (a) Water resistance (b) Water repellent (c) Transparent (d) Translucent.
Answers
Answer:
The technical definition of water resistant is that it's able to resist the penetration of water to a certain degree, but not entirely. Waterproof technically means that it's impermeable to water, no matter how much time it spends in water.
Durable water repellent, or DWR , is a coating added to fabrics at the factory to make them water-resistant (hydrophobic). ... Durable water repellents are commonly used in conjunction with waterproof breathable fabrics such as Gore-Tex to prevent the outer layer of fabric from becoming saturated with water.
Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them.
A translucent material lets light pass through, but objects on the other side can't be seen clearly. Think Shrinky Dinks or stained glass. In contrast, a transparent material allows you to clearly see the objects on the other side. Frosted glass is translucent, and regular glass is transparent.