July 17, 2004 Christ of the Abyss

Today in History

Man’s desire to enter the underwater world goes back to antiquity. Aristotle tells of Alexander the Great descending into the waters of the Mediterranean in something called a “diving bell”, as early as 332BC. The Italian polymath Leonardo da Vinci designed a similar apparatus, adding a face mask and reinforced supply hoses, to withstand the pressure of the depths.

Diving bell, 1691

The first on-demand underwater breathing valve came about in 1860s France, thanks to the work of inventors Benoît Rouquayrol, and Auguste Denayrouze. British diving engineer Henry Albert Fleuss developed the first commercially viable “rebreather” in 1878, using an air bag and rope fiber soaked in potash to “scrub” carbon dioxide from exhaled air.

The 20th century brought with it new and improved methods of pumping, and storing, compressed gas. By the 1930s every major belligerent of the coming war, had developed its own underwater breathing apparatus.

Dario Gonzatti…

View original post 374 more words

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s