Vending machines are actually all around us and utilized in our day to day living. We are absolutely well aware with those machines that deliver snacks and drinks. Also ice cream and hot cups of coffee can easily be found dispensed through some of them. Vending machines are machines that stores stuff, in specific light snacks and drinks. A person who is prepared to get a piece of an goods it stores is need to make payments towards by inserting coins or even by adding paper dollars. Although, no one has ever concern about the evolution and the historical past behind these machines and their utility at many different ages. The first recorded reference to a vending machines is found in the work of Hero of Alexandria, a first-century engineer and mathematician. His machine accepted a coin and then dispensed a fixed amount of holy water. When the coin was deposited, it fell upon a pan attached to a lever. The lever opened up a valve which let some water flow out. The pan continued to tilt with the weight of the coin until it fell off, at which point a counter-weight would snap the lever back up and turn off the valve. The gross margins in the bulk candy business can be quite high - gumballs, for instance, can be purchased in bulk for 2 cents apiece and sold for 25 cents in the US. Gumballs and candy have a relatively long shelf life, enabling vending machine operators to manage many machines without too much time or cost involved. In addition, the machines are typically inexpensive compared to soft drink or snack machines, which often require power and sometimes refrigeration to work. Many operators donate a percentage of the profits to charity so that locations will allow them to place the machines for free. Bulk vending may be a more practical choice than soft drink/snack vending for an individual who also works a full-time job, since the restaurants, retail stores, and other locations suitable for bulk vending may be more likely to be open during the evening and on weekends than venues such as offices that host soft drink and snack machines. Twenty-two percent of the children polled used vending machines, with the highest percentage found in high schools, understandably since a whopping 88% have vending machines in use. The location of the vending machines also made a difference; higher use was found in those located in actual cafeterias due to the availability of those snacks at mealtimes. When calculated, the study found that these foods can add an extra 300 calories per day to a child's diet, which can end up being an extra 14 pounds a year in weight gain.
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