Snorkelling vs Scuba Diving
Most people's first encounter with the underwater world happens with a mask and snorkel, and there's a good reason for…
Scuba Diving (12)
Your Guide to Snorkelling
I started my own journey into the underwater world with snorkelling. It seemed like a simple and natural way to…
Introduction to Scuba Diving
Scuba diving looks simple from the outside, but underwater, you quickly realise that there is much more to it than…
The Physics Behind Diving - Water Pressure and Gas laws
As we descend, the pressure around us increases. At sea level, atmospheric pressure is about 1 bar. As we go…
The Physics Behind Diving - Buoyancy
Buoyancy is based on a principle that has been understood for thousands of years. Long before anyone thought of putting…
The Physics Behind Diving - Effects of Pressure on the Human Body
Pressure affects the parts of our body that contain air. Our tissues are mostly liquid and therefore do not change…
The Physics Behind Diving - The Hidden Effects of Nitrogen
When we breathe compressed air underwater, we take in nitrogen at a higher pressure than we would at the surface.
The Physics Behind Diving - Decompression Illness
This article follows on from "The Hidden Effects of Nitrogen" Decompression illness, or DCI, is a general term covering two…
The Physics Behind Diving - Nitrogen Narcosis
Nitrogen narcosis is another effect of breathing compressed gas at depth. As we descend, the pressure of the nitrogen we…
How To use Dive Tables
At first glance, a dive table can seem rather complicated, with rows, columns, letters and numbers that are not immediately…
The Physics Behind Diving - Working Out How Much Gas We Need
I take having enough gas very seriously when planning a dive. I never start a dive simply because my cylinder…
The Physics Behind Diving - How We See Beneath the Surface
The way we see the underwater world changes almost as soon as we start descending. I remember the first time…
