The summer days in Scotland are long and mild with nights that stay bright until 10pm. The scenery is beautiful, the weather is at its best and the tranquillity makes an ideal choice for a relaxing vacation, or so you would think. Your holiday has just started and at the end of the first day the prospect of an aperitif in the garden or by the lakeside is very appealing. It has just passed 5pm. The first sip is rewarding and satisfying as you sit back to breath in the clean, fresh air and absorb the breath-taking scenery. Gradually you feel uncomfortable and find that you have the urge to scratch your head and face. Then you are aware of something like dust particles floating around the upper part of your body. Dismissing them with a wave, thinking they are far too small to contemplate, you carry on with your aperitif and conversation. But then you find yourself itching so much, eventually you can’t take it any more and head inside wondering how these minute creatures could have ruined your evening, you can hardly see them! Next day you frighten yourself as you look in the bathroom mirror, still itching, and see an image of someone who appears to be suffering from measles! But it’s not measles, it’s the result of the bite of the ferocious Culicoides impunctatus, the infamous female Highland Midge ! She will come out every evening like a vampire, to fulfil her need to supply her unborn eggs with blood. She breeds in damp vegetative areas and is attracted to you by the carbon dioxide you breath out. The only way she will not detect you and attack for your blood is if you stop breathing! However, there is an alternative…that works!
Scotland’s Most Infamous Female……she could ruin your holiday
From The Atom to The Black Hole
A black hole is a region of space with such intense gravity that nothing, not even light, can escape. This is the general understanding of the black hole. If gravity is still a phenomenon, how can we come to use this statement as if it was a fact? This is misleading. Besides, it is preventing our young thinkers from even to consider exploring the true nature of gravity. One of the things that irritate me most is, when scientists quote gravity and build up all sorts of formulae and equations around it, when they well know that they have no scientific proof of what gravity really is! As an authority, the majority of scientists are unwilling to admit that all they really know is what they have acknowledged from their tutors - a centuries-old legacy of scientific beliefs some of which were later proven wrong. It is no secret to say that scientific research is sometimes corrupted due to conflict of interests or the lure of profits. Personally, I do not believe that black holes really exist as described in the first paragraph. However, let us assume that they do! I consider myself as another Faraday. After many years of intensive study, searching for the secrets of gravity, I arrived to a point where I feel the need to share my theory of this so-called black hole. According to science, there is more space in an atom than there is matter. So, from where does all the energy come to keep the atom together and active, may I ask? This is my answer. The energy comes partly from the electrical field of the planet itself. This electrified field is generated by the planet’s inner core electromagnetism field, which as we know produces the north and south poles. And, the other part of the energy primarily comes from the planet’s nearest Star. This Star, in turn, radiates myriads of electrified particles that shower on to all the neighboring planets. By means of these electrified particles, the atom gets its energy and stays alive and active. The Auroras at the North and South Poles are a physical example of these electrified particles. Our solar system, and in turn our galaxy, works in the same harmony. That is why the planets revolve and hold their orbit around their Star. The planets and their Star attract each other because of these electrified forces. This is what gravity is all about. The same could be said of one galaxy to another that holds our universe together. My theory stands that a black hole is nothing more than a space in the universe where the electrified energy of the neighboring Stars do not reach - and therefore an atom cannot survive!
How to Build a Robot
Robots as we all know are considered as friendly creature created by human beings as we are created by God. They are created for human being to simplify life even more basically for our daily chores with the specified sequence and even by military for the purpose of doing things which has the danger to life of human beings and thus they are developed over years to substitute human beings in all the fields. Many of us are not that qualified to make a robot by ourselves and that why we all are anxious to know how to make a robot and even depends upon the task we want to create it for. We all have the tendencies of exploring whatever new comes in the field of science and hence a basic prototype robot can be created knowing few basic high end programming stuffs. Robots are almost 30% programming and hence if we target one specific purpose and program it well enough then it serves our purpose and the program mostly used for this is Unix and for beginner's Lego Mindstorms series is the best and how complicated your robot might turn up to be depends upon your technical acumen. While learning how to make a robot we should always keep in mind that fewer the moving parts be of the robot better it is for the beginner's as for startup we might just want it to move from here and there or hold something and sort of stuff. We should link if-then statement well and it should be taken care of that battery is never less then 50% and if so happens it should be re charged. Thus we now understand that knowing how to make robot can never be known as there is no limit to what can be achieved with the knowledge of science and development of robots can never end.
Ball Bearings Are Flat – Another Myth Crushed
What shape are ball bearings? They are shaped like a ball, as everyone knows, right?
The funny thing about what everyone knows is that everyone can be wrong. For instance, everybody thinks that the America's Cup is an ocean-sailing race, and yet the Swiss managed to win the Cup. For those readers who are geographically-challenged, Switzerland is a land-locked country comprised entirely of mountains.
What does this have to do with ball bearings. Very little, I suspect, but balls have very little to do with ball bearings, either. Ball bearings look more like hula hoops. But don't try using them for that – you will find them inconveniently heavy and painfully small.
You can view a picture of a ball bearing in the middle of this ball bearing supplier's page.
So what are those stunted metal tube donuts called ball bearings for anyway? Are they used as a spare wheel? Do they hold in evil shop-floor spirits? No, they help things move more efficiently. In an early demonstration of bearing usage, three ladies pulled a locomotive (It was just a demonstration, not a career development).
Many bearings look very similar, whether they are ball bearings, roller bearings or other bearings. What?! Other bearings?
What is a ball bearing, anyway?
Ball bearings are formed with an outer ring, an inner ring, a cage or a retainer inside, and a rolling element inside, typically a ball (which is why they are called ball bearings). Roller bearings are formed using a roller instead of a ball, which is why they are called roller bearings (Yes, finally something that makes sense!). Other bearings look just like metal tubes, called plain bearings or bush bearings. They look like sawed off pipe or tube (something my metal tube bending clientwould be turning into architecturally glamorous structural supports).
The principle of bearings is the same principle behind the wheel: things move better by rolling than by sliding. They are called "bearings" because they bear the weight of the object, such as an inline skate or the head of dentist's drill, allowing the object to glide over them with incredible ease and speed. Unlike wheels, they don't turn on an axel; they turn on themselves.
You can see this in action with some great cut-away pictures of bearings.
The balls or rollers spin on themselves inside the bearing, reducing friction for the machine parts attached to them. It's much neater than using a bucket of oil, especially in dental equipment, and significantly more reliable than hamsters on a wheel.
Once upon a time, all bearings were metal – like a metal tube or pipe with metal balls stuck inside. These days, more and more are made of ceramic or even plastic (like everything else in this world!).
If you are still confused about why ball bearings are not shaped like balls, just remember that you drive on a parkway and park on a driveway. And you can even try sailing your sea-craft through the Swiss Alps. But don't try playing a game of one-on one basketbearing.