In the game of cricket, if any member of a fielding side alters the shape of the ball with either his nails or with using any object to get some extra advantage like unexpected swing or spin is called ball-tempering.How Does It Benefit the Bowler?Once the aerodynamics of the ball has been altered, a bowler can easily swing the bowl even on a flat pitch where no natural support from it is gained. When the bowl is thrown and it touches the pitch from the same side where it has been damaged, it takes unexpected turns and dazzles the batsman ... Read More

The wicketkeeper changes his position after every over because the bowling and the batting ends are switched after every six balls. The act of switching the ends is done to keep the game fair. In addition, it also aims to minimize any advantage that players might get due to the following extraneous factors:Ground Dimensions-Certain boundaries of ground may be shorter or longer than the rest.Wind Direction-Wind blowing even in a slightly intense pace can help both; the batsman as well as the bowler.The Condition of the Pitch − Usually an innings of an ODI match consists of 50 overs, T20-20 ... Read More

Many of you might come up with an answer, which says Elephants have the best memory among all creatures found on the earth. However, I would say they used to top the list until this new research budged out. Sorry elephants, someone else have got better memory. At least for now.Even we have idioms reflecting the same e.g. ‘Memory like an elephant.’So, which is that animal who has taken them over? Bottlenose dolphins are the ones that remember things better than these large fellows. A study done by Jason Bruck, an animal behaviourist has revealed.

In the basic terminology in the system of limits and fits are a number of general definitions and terms which are used in the system of limits and fits.The terminologies are as follows:Shaft: Shaft can be defined as it is a member which can fit into another part with proper assembly of the part. A shaft can either rotate or be stationary. The shaft will be applied to a member which has to fit even if there is a restriction between two spaces.Hole: Hole can be defined as a member who can house or fit the shaft. A hole can ... Read More

Fits in metrology are the dimensional relation between the mating parts which are known as fits. It indicates that the tightness or the loosening of the mating parts. For engineering purposes, this is very important because it is used in real life applications for the satisfactory working of parts in movement such as a piston in a cylinder, journal in a bearing, gear on splines, a valve in a valve guide and wheel on a shaft.There are very important terms related to a fit which is:Clearance − Clearance in a fit is when the difference between the sizes of the ... Read More

Selective AssemblyThe selective assembly can be referred to as a concept where the subcomponents are assembled to form a proper final assembly which will in return provide the highest tolerance specification.Using selective assembly when the parts are being manufactured, the selective assembly resembles an old concept of inspection, in which the component is being identified as good or bad. If all the parts are correct and the component is good then it will be used for assembly or else it will be used for scrap purposes.In selective assembly, if the components are divided into different categories, then the groups will ... Read More

There are many types of gauges which are commonly used in production work. Let us look at some of them.Plug GaugesPlug gauges are gauges where the plug and pin gauges are used for go assessment and non-go assessment of holes and slot dimensions where the locations are compared to some specified tolerances. Then these gauges are considered to be used for some productive work and are used for checking holes of many different sizes and shapes.Ring GaugesRing gauges are gauges which are used to test the external diameters of gauges. These allow shafts to be checked accurately and then they ... Read More

The guidelines for designing a gauge should be carefully done. The form of go gauges should exactly combine with each other so that the mating parts can fit into each other properly. These gauges, especially the go gauges should enable simultaneous checking of several dimensions and must be used for the maximum amount of time. Then the no gauges should be able to check the number of dimensions at any time. It must be taken care of and given the maximum amount of possibility.Material for GuagesThe materials to be considered for gauges should have good properties. The material used for ... Read More

Overpopulation is an unwanted situation where the quantity of existing human populace surpasses the space limit of Earth. Overpopulation is caused by a number of elements. High birth rate, drop in death rate, better therapeutic offices, consumption of valuable resources are a few causes of overpopulation. In the history of our species birth and death rate was always at a balance but recently there is an unwanted trigger in this balance which causes the population boom.Developing technological advances with every year has influenced mankind from numerous points of views. One of these has been the capacity to spare lives and ... Read More

When we work out, the muscles we utilize require more energy. At the point when exercise can be controlled, this requirement is met essentially by aerobic means. Vigorous energy generation in muscles brings about an increase in the gas exchange rate in the lungs since more oxygen is taken in and more carbon dioxide is discharged. Your blood transports these metabolic gasses to and from your tissues.Carbon dioxide yield depends to a great extent on the measure of energy your body is utilizing. Your body continually needs vitality for fundamental operations, for example, your heart and digestive system. This implies ... Read More