Showing posts with the label L

Multicolored lighting CAVE

A natural limestone cave with multicolored lighting The Reed Flute Cave is a landmark and tourist attraction in Guilin, Guangxi, China. It is a natural limestone cave with multicolored lighting and has been one of Guilin’s most interesting attractions for over 1200 years. It is over 180 million years old. The cave got its name from the type of reed growing outside, which can be made into melodious flutes. Reed Flute Cave is filled with a large number of stalactites, stalagmites and rock formations in weird and wonderful shapes. Inside, there are more than 70 inscriptions written in ink, which can be dated back as far as 792 AD in the Tang Dynasty. These aged inscriptions tell us that it has been an attraction in Guilin since ancient times. It was rediscovered in the 1940s by a group of refugees fleeing the Japanese troops.


"Wave Rock" is a natural rock formation that is shaped like a tall breaking ocean wave. This real nature wonder is located 3 Kilometers east the town of Hyden in Western Australia. The Wave Rock is 15 meters high and almost 100 metres long. According to scientists, this stunning stone formation is 2700 millions years old. The rock is composed by grey and red granite strips. According  to geologists, the particular shape of the rock was formed by subsurface chemical weathering followed by removal of the soft weathered granite by fluvial erosion; this weathering occurred below ground level before it was exposed. The colours of the rock were produced by the rain chemical deposits (carbonates and iron hydroxide) down the face, forming vertical stripes of greys reds and yellows. It is an interesting and nice spectacle to see how the rock changes its colors along the day, producing awesome views.

Do you think left handers are increasing ???

I found myself browsing the  New Scientist  website for articles relating to being left handed.  I guess it’s just natural that a by-product of running a  left handed guitar  website is developing an interest in the reasoning behind our ‘ gift ’. So following on from my article asking if  numbers of left handed guitar players are increasing , this one should address the science behind why left handers in general are increasing. To quote the great Ben Affleck in his super-manly shampoo commercial…” here comes the science… ” I read many interesting articles but the point that cropped up the most was that left handed people are becoming more and more common.  A study carried out by the University College London (UCL) found that the proportion of left handed people stood at just 3% of the population only 100 years ago, whereas now it has increased to 11%. Left Handed People Were Victimized For Centuries Professors at UCL concluded that this increase may be attributed to the styl

Top 9 left handed Guitarist advantages

1. Keep Your Hands Off! Consider this scenario.  You’re at band practice and your hyperactive drummer wants a shot of your brand-spanking-new guitar.  You agree and he proceeds to crank the amp to 11 and thrashes around the room like a demented hamster on speed. Whilst doing this his dumb-ass manages to cream your headstock into the wall after getting entangled in cables.  You exchange words and you leave the band with a broken axe and possibly a criminal record. Now consider this scenario as a lefty. You’re at band practice and your hyper-active drummer wants a shot of your brand-spanking new guitar.  “ I do beg your pardon kind sir, but this instrument happens to be of the left handed variety and as such you would not be able to produce fine music with your right-handed mindset ”.  Disaster averted, band saved, jail-time avoided! Huzaaah! Obviously that’s an extreme example, but being a lefty has certainly saved my grubby mates from getting their dirty paws on my pride and j
Through some exhaustive research (*cough*, an hour on Google!) I found out that no one really understands for sure.  Ultimately hand preference comes down to a variety of factors, partly genetic and partly environmental, but there’s no real conclusive evidence with which to give a definitive answer. Until scientists finally crack this little conundrum we can only hypothesize at best.  Here are a few of the theories I found that attempt to explain why people are left handed.  Some are a little more far-fetched than others… Left Handed Genes Some scientists believe that left handed people simply lack the right-handed gene.   This theory has never been conclusively proven and the ‘right handed gene’ has never been located.  However, a further group of scientists have claimed to have located a specific gene which when present  does  show an increase in left-handedness.  Unfortunately, possession of this gene also apparently results in an increased chance of psychotic mental illnes

15 superstitions, myths and tales of folklore are lefty's

We’ve compiled a list of 15 superstitions, myths and tales of folklore which show the stigmas associated with being left handed in times gone by. For the most part there are very few positive myths associated with the left hand.  The overwhelming majority of left handed superstitions involve some general theme of bad luck and evil, devil worshipping madness.  Hope you aren’t  too  superstitious! Negative Left Handed Superstitions, Myths and Tales of Folklore 1. In ancient imagery the left hand would generally symbolise ‘female’, while the right hand would symbolise ‘male’. 2. Many people believed it bad luck to pass a drink to someone with your left hand.  Likewise, pouring a drink with your left hand isn’t going to bring you luck! 3. Staying on the subject of drinking – giving a toast with your left hand is the same as placing a curse on the person(s) you are toasting! 4. In the profession of dressmaking it is considered bad luck to attach the left sleeve before sewing

25 amazing facts about lefty's

list of 25 interesting scientific facts related to being a lefty, from the funny to the weird and everything in between. One really interesting factoid that I picked up was from a scientist who believed that left handed people tended to be more independent as a result of having to adapt to a world which is largely built for right handed individuals.  Here are a few more fascinating pieces of trivia related to being a lefty… Scientific Left Handed Facts Make up between 5% and 10% of the population (depending on who you ask) More likely to have allergies More prone to migraines More likely to be insomniacs Use the right side of the brain the most Three times more likely to become alcoholics – the right side of the brain has a lower tolerance to alcohol! More likely to be on extreme poles of the intelligence scale Tend to reach puberty 4 to 5 months later than right handers More likely to suffer stuttering and dyslexia Twice as likely to be a man Better at  3D perceptio

Are left-handed people smarter, more artistic or just plain clumsier?

  About 10 per cent of the population is left handed and many more of us switch between our hands for various tasks. Yet left-handers have been discriminated against since ancient times and many myths surround this difference. In fact, most of the popular beliefs about left-handers rarely stand up to close scrutiny, none more so than the belief that they tend to be a little clumsy. It may appear so, but that's only because most of the world's tools, sporting equipment and musical instruments are designed by right handers for use by right-handers. An awkward world   Everything from the angle of scissor blades to the turn of corkscrews and the placement of camera buttons favours the right-handed.  So do buttons - at least for men. Ever wondered why women's buttons do up on the left side? It's a relic from the time when right-handed maids helped their mistresses to dress.  More seriously, many power tools and heavy machines can be dangerous because left-han

Light House



LAPTOP PROTECTOR CIRCUIT Protect your valuable laptop against theft using this miniature alarm generator. Fixed inside the laptop case, it will sound a loud alarm when someone tries to take the laptop. This highly sensitive circuit uses a homemade tilt switch to activate the alarm through tilting of the laptop case. The circuit uses readily available components and can be assembled on a small piece of Vero board or a general- purpose PCB. It is powered by a 12V miniature battery used in remote control devices. IC TLO71 (IC1) is used as a voltage comparator with a potential divider comprising R2 and R3 providing half supply voltage at the non-inverting input (pin 3) of IC1. The inverting input receives a higher volt-age through a water-activated tilt switch only when the probes in the tilt switch make contact with water.When the tilt switch is kept in the horizontal position, the inverting input of IC1 gets a higher voltage than its noninverting input and the output remains low. IC CD4

Limited-Slip Differential

Limited-Slip Differential A differential does not provide a high mechanical efficiency, which is desirable for the majority of mechanical components. Even if a 'low friction' differential with reduced traction over slippery surfaces is fitted, it limits acceleration of a high-power vehicle and causes excessive tyre wear. The torque reaction of the engine of such a vehicle, during acceleration, tends to lift the left-hand driving wheel off the ground. When accompanied by an uneven road surface, this causes excessive wheel spin. To minimize these drawbacks, the differential action is counteracted by artificially increasing the friction between the sun wheel and the differential cage. When this feature is included, it is called limited slip differentials. Two basic types of limited slip differential are : • Mechanical limited-slip differential  • Visco-differential Fig. 26.46. Final drive assembly with limited slip differential   Mechanical Limited-slip Differential Figure 26.46 i


Liberator On display at the West Point museum is an example of the “ Liberator ” pistol mass produced during World War II. Little more than a stamped-metal “ zip gun ” the idea was to produce at minimal cost the minimal firearm capable of putting down an enemy soldier.  It was a one-shot weapon ( with storage in the grip for a few extra rounds ), not intended for combat use. Instead, the idea was that it would be airdropped to partisans across Europe, who would use it to cap Axis soldiers… and then take *their* guns. Relatively few of the millions produced still exist; fewer still were actually used. They came packaged in a carboard box with a cartoon instruction sheet. A wooden dowel rod was also included to help the shooter eject a spent cartrige. Given its limited practical value, they are really rather pricy, and if you find a boxload of ‘em, scrapping them for the steel would be a really, really bad idea.