Archives for: Techno Mum

How do fingerprint scanners work?
Great question! You see finger print scanners on lots of devices these days β including mobile...

What do car batteries do?
The fuel in your carβs tank is used to power the engine but cars have a battery too and if thatβs...

How do electronic car keys work?
Lots of cars have electronic keyfobs β they look a bit like a keyring but by pressing a special button...

How do game controllers work?
Great question! Now games controllers can have as many as fourteen buttons β some to start the game, some...

QUIZ: Take Techno Mum’s Tech Quiz!
These days thereβs so many cool gadgets and inventions that are just a part of our everyday life... From...

Why can't you put metal in microwaves!
Inside a microwave is a little transmitter which sends out waves of energy called 'radiation'. These...

Kids' Guide to Building Tunnels
Digging tunnels involves some very special engineers. And how they dig tunnels depends on what they have...

Kids' Guide to Internet Security
Often the simplest ways is to simply get in with a password. Its amazing how people have easily guessable...

Kids’ Guide to Dams
There are many different types of dam and they all work in different ways and do different jobs. Take a...

Kids' Guide to Natural Disaster Aid
Thatβs a very interesting question, and the answer is a lot! You see, after a natural disaster, there...