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Which development took place within the Northern International movement of the 15th century?
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∙ 13y ago
the use of oil paints
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∙ 13y ago
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What engineering technique was described by this sixteenth-century author?
As soon as the Incan ruler had conquered any kingdom and set up his government, he ordered that the farmland used to grow corn l be extended.
What did the early machines run on?
Early machines would run on energy sources available at the time, namely manual labour, animal labour, water power and wind power. There is evidence of steam power dating back 2000 years but this was ineffective/inefficient. It wasn't until improvements in the 18th century that steam power really took off.
Who invented the 6 simple machines?
1. The Pulley- Probably the earliest lifting pulleys used a rope over tree branch to lift heavy objects. Although pulleys were in use around the time the pyramids were built there is no record of them being used in their construction.The first pulley systems built for lifting would have been made of tree trunks or branches with the rope over the horizontal part of the system. The use of wheels was the next step in the history of lifting pulleysAs people needed to transport goods over longer distances they discovered sails that used the power of the wind. To be able to use the wind power the sailors had to be able to raise and lower the sails. Pulleys were ideal for this task.About 1100 AD the building of large churches called cathedrals became popular. These buildings were very large and some were around 150 meters high. Huge blocks of stone had to be lifted to build the walls and spires. The cathedral builders were the same people who designed and built the pulley systems to lift the blocks of stone.2.The lever- Levers are one of the basic tools; they were probably used in prehistoric times. Levers were first described about 260 BC by the ancient Greek mathematician Archimedes (287-212 BC). Many of our basic tools use levers, including scissors, pliers, hammer claws, nutcrackers, and tongs.3.The Wedge- History is not clear since it has been around for around 9,000 years. Almost all known ancient civilations had their version of the wedge.4.The Wheel and Axle- The wheel is probably the single most important invention of all time. The oldest wheel was found in a place that is now called Mesopotamia. It is believed to be over fifty-five hundred years old. Before that time, people did not have wheels to move heavy objects. Axles were used to unite two or more wheels in order to achieve more work or transportation done.5.The Inclined Plane- The inclined plane is one of the simple machines of antiquity, the physical operations of which were first theorized by Archimedes in the second century B.C., and then further explained by Hero of Alexandria in the first century A.D.6.The Screw- Around the first century, screw shaped tools became common, however, historians do not know who invented the first. Early screws were made from wood and were used in wine presses, olive oil presses, and for pressing clothes. Metal screws and nuts used to fasten two objects together first appeared in the fifteenth century.
How does an automatic weapon work?
With the advent of machinery in the 18th century, inventors were able to mechanize the process of shooting--allowing semi-automatic & automatic weapons to be developed. Most automatic weapons have the following cycle: 1- Firing (firing pin strikes primer, propellant burns forcing projectile down the barrel), 2- Extraction (spent brass casing is extracted from the chamber), 3- Ejection (spent brass casing is ejected clear of the weapon), 4- Chambering (a fresh round is fed into the weapon's chamber) The weapon cycles automatically. If only one bullet is fired per every pull of the trigger, the weapon is said to be semi-automatic. If more than one bullet is fired with every pull of the trigger, it is considered automatic.
How do you make a simple theodolite?
Making a simple theodolite: an activity for a measurement lessonFebruary 6, 2010Filed under tutorialsTags: 3rd grade, homeschool, math activities, measurementone responseA theodolite is a surveying instrument of unknown origin, but can be traced back to the 16th-century English mathematician Leonard Digges. This is info for you not the child.You will need:a piece of thick cardboarda plastic strawthread, or thin stringa small screwtapescissorsa rulertape measure for activityFollow these steps to make your theodolite:Cut a 6 x 6 inch square from the cardboardcut the square in half diagonallytape the straw to the diagonally cut edge of one of the trianglescut a 10″ pice of thread, and tie on end to the screwtape the other end of the thread to the triangle so that it hangs straight down along one of the 6″ edges.Your theodolite is ready to rock & roll. Not really, but is is ready to measure tall things. If you can find a straw as long as the diagonal side, then by all means allow the straw to run the entire length of the side. This was the longest straw I had.Using your new tool is simple. Follow these easy steps:find a tall object that you would like to measureraise your theodolite up to your eye, and look through the straw.find the top of your object through the strawmake sure your string with the screw on the end stays straight along the edge of your triangle.You must move backward or forward until the top of your object can be seen through the straw. The thread must stay in line with the edge of your triangle. It can not dangle forward, backward or to the side.Once you have found the correct position and can see the top of your object through the straw & the string is aligned with the edge of your triangle, mark your position on the ground. You have created an invisible triangle.After you have marked your position on the ground, measure the distance you are from the base of the object you are measuring using the tape measure.Now measure your own height.Add the distance you measured to your height. This is the height of your object.For instance, if the distance to the tree is 45 feet, and you are 4 feet 10 inches tall, your total would be 49 feet 10 inches.When we did this activity, we used a tape measure. I had her write down the distance to the object in inches, and her height in inches. After she added the 2 heights together , I had her convert the inches to feet in order to get in some math practice.So if her total were 495 inches, she would find how many feet this is by dividing by 12. It would be 41 feet, 3 inches.LikeBe the first to like this.One Response to "Making a simple theodolite: an activity for a measurement lesson"Comments Feedlessons this week-finishing up linear measure « Our Little Nature Nest [...] we walked around a bit we sat down by the river, and made a simple cardboard theodolite. A theodolite is a tool surveyors use to measure tall objects from a distance. You can make a very [...]Reply
Which development took place within the northern international movement within the 15th century?
the use of oil paint
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i banged your mom
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Modernism
In response to the great social and cultural upheaval of the 18th and 19th centuries appeared as an international movement in art and music around the turn of the 20th century?
Modernism
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