Fan of puzzles? Do you want to share your passion with family members, young or old? Do you want to please with a personalized fun gift? Do you want to surprise and entertain your loved ones? Order a personalized photo puzzle with a photo of your parents, your children, the person you love, your dog or your cat. Or take a photo of your group of friends on their motorbike. Choosing a personalized puzzle with a photo has only advantages. It is above all a photo chosen by you, therefore a unique gift that causes emotion and a lot of pleasure. Moreover, the puzzle is an activity as calm as it is intelligent where patience, reflection and motor skills make it possible to realize it. It develops visual memory. But it is also a cooperative game: alone, with friends or family all can have fun doing it together. Turn your family portrait into a game: Taking and undoing the photo of grandpa and grandma is too fun for your child. If he doesn't know how to do it well, you help him and step by step he will be proud to do it alone! Offering an invitation, a greeting card or a photo of the youngest ... in the form of a puzzle to undo and redo, is certainly an original idea, unconventional and unusual ... Once completed, the puzzle can be a precious image to hook. Fun and playful kdo for birthday, Christmas kdo, family gift idea …

13th century. Mechanical clocks began to develop. More than thirty testimonies are quoted from all over Europe at the end of the 13th century. In these texts we find the purchase of iron and weights and the acquisition of expensive clocks in monasteries, cathedrals and princely residences. These prices were often considerable: six marks for the clock of the monastery of Colmar in 1278, thirty pounds for that of Canterbury in 1292, fifty pounds for a simple repair or transformation of the clock of the cathedral of Sens in 1319. Gradually, the mechanical clock, whose movement is permanently maintained by a motorised weight, replaced the boring water clock that had to be constantly cleaned and filled or emptied. It seems that these early clocks - like the water clocks - were first intended to strike a particular time (e.g. alarm clock) and a little later to strike different times of the day; these clocks were "blind": they had no dial! The striking mechanism was operated by one or more pins on a wheel of the mechanism. This transfer of technology from hydraulic to mechanical power enabled the original purpose of the clock to be retained: the striking of a precise hour; this invention has therefore remained practically anonymous. It was not until a little later, in 1336, that an important innovation changed the history of clock-making: striking clocks. A clock with a reproduction of the top 10 works of art are unusual artwork ideas,cute artwork gift ideas , perfect to buy a artwork gifts and unusual to personalise artwork gifts, special artwork gift ideas, to personalise artwork gifts for…best artwork gifts for… unique artwork gift for…

Mechanical clock A mechanical clock is a time-measuring instrument that tells the time by an originally entirely mechanical action. It is based on the combination of three functions: a driving weight for the rotary movement, a regulator such as a balance wheel and a display (a graduated scale and hands). The mechanical clock is the successor to the various horologia. The Romans, and before them the Egyptians and Greeks, had already developed time-measuring instruments that demonstrated great astronomical knowledge. The invention of the mechanical clock can be placed around the 1300s and appeared in Western Europe at the end of the 13th century. Originally, it was a weight motor and foliot. A foliot is a vertical pendulum that controls the energy supplied to a wheel by a weight. The motion is then transmitted to gears that drive the movement of the hands. A weight suspended from a rope provides energy to the machine, while a system of rods and foliots periodically interrupts the fall of the weight. By placing the weights at each end of the foliot, the rhythm of the back and forth movements can be adjusted. The low precision of this mechanism, from 1 to 2 hours of deviation per 24 hours, renders the minute hand useless, and it will undergo a long evolution and an important diversification over the centuries. Having a clock as a birthday gift with a decoration dedicated to a specific birthday, 20 years, 60 years or more, is fun: unusual gifts for birthday, best anniversary gift ideas and unique anniversary gift ideas for an event that is celebrated every year and that will remain unique.

Clocks Since time immemorial, people have tried to tame time. Thanks to scientific discoveries and technical innovations, the measurement of time has gradually been mastered. For thousands of years, people have measured time in a variety of ways, including following the movements of the sun with sundials, using water clocks, candle clocks and hourglasses. Our modern basic 60 time system, a clock with periods of 60 minutes and 60 seconds, dates back to 2000 BC in ancient Sumeria (the southernmost region of ancient Mesopotamia). History of clocks; "Time is money", they say, but the history of clocks is long and fascinating. The measurement of time is one of the earliest developments of mankind and time has changed greatly since ancient times. The birth of clocks to measure time: A clock is a time-measuring instrument that usually tells the time continuously. The word comes from the Latin horologium, "that tells the time", itself derived from the Greek ὡρολόγιον (formed from oρα, "time", and λέγειν, "to tell", λόγιον, "to tell"). Since ancient times, the Latin term 'horologium' has been used to refer to any instrument capable of indicating time, which has often led to difficulties in interpreting ancient texts. Thus, a sundial, a water clock, an astrolabe, a nocturlabe, a mechanical clock were called "horologia". A clock with a photo of your holiday by the sea, in the mountains or in the countryside. There's nothing better to cheer you up when the holidays are over or when the weather is not good. These are custom photo gifts, photo gifts ideas, to personalise gifts photo, to personalise with photos