Here is the one on Scuba diving gear.
Diving Cylinders (Oxygen Tanks)
Divers carry one or multiple diving cylinders with
them while they dive, depending on the application of the diving cylinders.
Diving in low risk areas allow divers to carry one cylinder, as they can safely
make a free ascent, or when someone else is able to provide another air supply
in emergencies.
The term scuba derives from the acronym SCUBA
(self-contained underwater breathing apparatus), and therefore scuba diving
refers to diving with the use of diving cylinders, which provide divers their
air supply while underwater.
In diving, the commonly used gas mixture is Nitrox, or
Enriched Air Nitrox (EAN), the normal air composition with more oxygen added in
till about 32% to 36% of the mixture, and removing nitrogen, reducing the
likelihood of decompression sickness. Many gas mixtures can be used, as long as
the user is trained properly for the use of the scuba gear. The lower nitrogen
amount allows for shorter interval in between dives, allowing people to enjoy
more.
Recreational and open-water divers can afford to use
normal air in their cylinders due to the water not being very deep. However, if
a diver uses normal air in deep waters (90 feet or more), nitrogen narcosis,
which is a syndrome that will affect the diver’s judgment, will occur, and
might lead to mishaps.
It is important to know what kind of air mixture to
use for what kind of diving, to avoid the possibilities of mishaps at sea.
Scuba diving is a fun sport, but might get dangerous if no proper training in
the usage of the cylinder is present.
Next is the review of a documentary I watched. I found the documentary on youtube, so you can take your time and enjoy it.
Ancient Aliens: Gods & Aliens
I read from the internet about an incident that
happened during WW2. There was this pilot who crash-landed into a Brazilian
rainforest and was found out by an isolated Brazilian tribe of natives. The
natives were so impressed with his technological advanced ways and his descent
from the sky that they thought him to be a god, and even created a religion
around him.
I watched the documentary on History Channel, with the
specific episode being ‘Gods & Aliens’. The episode explored the
possibility of gods being aliens and such topics. I was interested in this
documentary as it was a clash between religion and science, something not very
uncommon throughout the history of mankind.
The documentary is focused on Greece, where the ancient
Greeks worshipped many gods. Mount Olympus, the home of the Greek gods, was
described as having ‘walls that always glimmered of gold or silver, and also
lights that seemed like jewels’. There are also accounts of how Mount Olympus
would sometimes rumble loudly, before the top of the mountain come off. Experts
believe that what our ancestors saw could be a spaceship of extraterrestrials. The
weapons that the god possessed, such as Zeus’ lightning bolt and Poseidon’s
trident, are thought to be direct energy sources, and therefore, could have
destructive power, which would explain how Zeus could destroy cities and
Poseidon could create massive tidal waves. A possible explanation for Apollo’s
chariot is that it is also a spacecraft.
There are also the Carnac stones, huge stones that are
arranged in a geometric formation that creates Pythagoras triangles, in France.
These stones date back to between 3300BC and 4500BC, which are 2000 years apart
from when the Pythagoras theorem was discovered. Experts believe that these
stones were moved by people, but by order of the aliens. These stones are
believed to be directional pointers for the aliens when they were travelling in
their spacecraft.
Gods in all religions play a part. The Greek and Roman
gods seem to be similar, with similarities in Zeus and Jupiter, Poseidon and
Neptune, as well as Apollo. The Norse people of Scandinavia, whom lived in
today’s Denmark, Sweden, Iceland and Norway, also have records of powerful gods
and supernatural beings. There are a handful of similarities between Norse
mythology and Greek mythology, with comparison between Odin and Zeus, both
being the ‘Sky Father Gods’, the leader of the other gods. There are also
similarities in their weapons, with Odin possessing a spear that ‘never missed
its target’, similar to Zeus’ lightning rod.
In Ancient India, there are records of gods having the
technology that allowed space travel, as well as ‘cities’ in the skies. It was
probably the aliens’ mother ship, as it was described as having spacecraft fly
out.
Then they talked about giants and other mixed
creatures like centaurs. These creatures are believed to have been genetically
modified from humans by these ancient gods, in a bid to improve mankind. It is
generally agreed that during the 3000BC time period, humans took a quantum leap
in development. In the short 300,000 years we had to evolve, our brain size
tripled. This is scientifically impossible, which brings up the issue, whether
these ancient gods had interfered in our evolution. They could have made giants
and such creatures, and then introduced them into society, and when these
creatures mated with normal humans, there could have been a possibility that
better offspring was produced.
However, these gods have been missing from Earth for very
long. As we are their ‘products’, they would continuously check on the progress
of their ‘products’. This could be a possible explanation of UFO abductions.
When would these gods be coming back? And when they come back, what will they
do?
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