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Why are GORE-TEX type materials are waterproof and yet breathable?

The material is made up from nylon laminated with a PTFE / polyurethane membrane. The membrane is too fragile on its own hence why it is com...

LB
Answered by Lily B. Chemistry tutor
4549 Views

Why do lasers produce an intense coherent beam of light?

Lasers produce an intense coherent beam of light because the waves have the same frequency, are in phase with each other and have a low divergence.

LB
Answered by Lily B. Physics tutor
5514 Views

What is the difference between a metaphor and a simile?

A simile is a figure of speech that refers to comparable phrases that are alike in some way (e.g. 'as black as coal'). Contrastingly, a metaphor is a figure of speech that is applied without being the ...

DO
8482 Views

What is the perpendicular bisector of the point (0,2) and (1,0)?

First things first it will definately be useful to make a quick sketch of the x-y axes, the two points, and roughtly what the perpendicular bisector will look like.

This kind of question ...

JR
Answered by Josh R. Maths tutor
6447 Views

Why maths?

Maths has always been a passion of mine from a young age. I've always enjoyed helping others with their maths as I find it extremely stimulating.

LC
Answered by Lauren C. Maths tutor
4790 Views

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