Original source : http://www.scientificamerican.com
Posted : March 2002
Author : Tobias Rossmann
What is the sound barrier?
The sound barrier, in aerodynamics, is the point at which an
object moves from transonic to supersonic speed. The term, which occasionally
has other meanings, came into use during World War II, when a number of
aircraft started to encounter the effects of compressibility, a collection of
several unrelated aerodynamic effects that "struck" their aircraft
like an impediment to further acceleration. By the 1950s, new aircraft designs
routinely "broke" the sound barrier
Original source : http://www.gizmocrazed.com Posted : June 2012 Author : Nematoda
No one likes to visit a doctor or a hospital. However, there
are some common diseases that people face very often during their life cycle.
No matter how fit you are there are high chances that you might suffer from
these diseases in your lifetime. Even though these diseases are common, you should not
ignore them; if ignored, they might have serious implications. Following
is the list of Top 10 common diseases in the world that you should know.
Original source : http://www.wonderslist.com Posted : Author : Sarah Salman
Time passes by with the speed of light; a year comes and
goes very fast. In our busy schedules we don’t have much time to appreciate the
memories whether happy or sad. So here we have tried to put some major events of 2013 together. As far as events are concerned, 2013 was one of the most
eventful year. We witnessed many bright and shiny mornings and delightful
evenings in the whole year but at the same time we also witnessed many
unbelievable moments in this year. Here we take a brief glance and review the
top 10 major incidents of 2013.
The following are actual statements found on insurance forms where car drivers tried to summarize the details of an accident in the fewest possible words. Some of these are actually quite old, in fact I remember my mom (who used to work for an insurance company)
showing me some of these about 20 years ago. I haven’t seen them for a
long time, so maybe they will be new to you or at least raise a laugh
(which is our hope).
Original source : http://techflesh.com Posted : January 2014 Author : The admin
The problem with electric cars these days is that their lithium-ion
batteries need to be replaced every few years, with some costing in the upwards
of $10,000+. Researchers at the Center for Solar Energy and Hydrogen Research
Baden-Wurttemburg (ZSW) have developed one of the most efficient lithium-ion
batteries yet, and in an electric vehicle they’re expected to retain 85% of
their capacity after being charged every day for “about 27.4 years.”
Muskoka Lakes Boathouse by Ottawa-based studio Christopher
Simmonds Architect is located in Muskoka
Lakes, Ontario, Canada. The construction that gets
its name from its location is a renewal of an existing boathouse with 600
square meters, it includes a second guest suite and roof terrace. Its design in
the wilderness provides varied views as well as a sheltering foil to the open
lake breezes and water traffic.
Hundreds of strange archaeological discoveries have been
made in modern history. However, many archaeological discoveries also offer a
tempting insight into unsolved mysteries, which continue to fascinate people
around the world. Check out these 10 controversial archaeological discoveries
and find out why each one stimulates debate between scientists, historians, or
the general public.
Fascinating photos by Los
Angeles based photographer Sabine Pearlman reveal
hidden complexity and beauty in the designs of modern bullets. The bullets were photographed inside of a World War II bunker in
Switzerland. A lot of engineering went into the creation of each bullet.
Beautiful images stand in vast contrast to the destructive purpose of these