The new
technology Wi-Fi technology Li-Fi is really fast it is 100 times faster than
Wi-Fi. In lab tests the fastest speed they have ever gotten is 224 Gbps. The
speed is amazing it is so fast because it transfers data threw LED bulbs in
your house. It sounds really good but there are some downsides to this idea.
The biggest problem is that you need to have a Li-Fi bulb in every room you
want to have Li-Fi in. It also doesn’t work out in direct daylight. Li-Fi is
also going to need reinvestments in lighting and wiring infrastructure.
The
technology that is coming out from Amazon and there drone delivery is pretty
cool. They have done some practice deliveries and it seems promising at the
moment. The drones can only fly 15 miles from the warehouse so it’s not the
best option for delivering things just yet. It even has technology in it to
avoid other things that are in the skies. Drones in general have advanced a
lot. They are used for lots of movies because they are smaller than a
helicopter and can fly really stable. Some drones can even take off and land on
their own.
Yesterday
December 10 Germany launched the world’s largest fusion reactor. It is the
world’s first large scale stellarator and it took 1.1 million working hours to
assemble. The reactor will have to heat and hold gases that are 7 times the temperature
of the suns core. The heat strips the electrons from atoms leaving plasma of
electrons and ions. The reactor also makes the ions move fast enough to
overcome the repulsion and fuse together. The older fusion reactor the tomahawk
was in a plain donut shape. The gases are hard to contain in a normal container
so they have to use a magnetic field around the donut to hold it in. The only
problem with that is the magnetic field is that it’s stronger on the inside
than it is on the outside so they have to put a twist in the donut so the ions
go through strong and week points. The problem with tomahawk reactors is they
can only drive a current in the plasm in short bursts and the current in the
plasma can falter resulting in disruptions which could damage the reactor.
Stellarators don’t have these problems so the might be good for commercial use.
The magnets are being cooled with liquid helium. The new reactor in Germany is
being tested with helium and then they will use hydrogen.
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