Things Around Us
Why Can't We See Air? Transparency, Explained
You cannot see air, and that is not a flaw. It is transparency — why gases let light pass through and why the trick feels so strange.
Things Around Us
Airplane mode, traffic light colours, air in snack packets - the hidden reasoning behind everyday things.
Things Around Us
Why Chip Packets Are Full of Air (It's Not Oxygen)
That 'air' in your chip packet is not a rip-off. It is nitrogen, and it keeps snacks fresh and unbroken. Here is the story behind the cushio...
Things Around Us
Why Traffic Lights Are Red, Yellow and Green
Red, yellow and green: the traffic light's colours were no accident. How engineers chose them and what each one signals to every driver.
Things Around Us
Why Birds Don't Get Electrocuted on Power Lines
Birds perch on live power lines every day without a shock, while touching one would be fatal for us. Here is the simple physics that keeps t...
Things Around Us
Why Airplane Mode Exists (It's Not About Crashing)
Why are we asked to switch on airplane mode? It is less about crashing and more about interference. Here is what the rule really does.