Who is cartesian named after

I was about to ask the question here then I typed Cartesian into the title box and this popped up. Tempting as it may be, the conjecture that the name "Descartes" refers to his geometrical invention and method, is provably wrong.

The name Descartes is known to have first been used by the philosopher in his Law Thesis from , long before he explicitly developed the idea of mapping thoughts, let alone the idea of a geometrical coordinate system. Add a comment. Active Oldest Votes. So yes, it is named after him. Improve this answer. The reason is that des- merely means "of", so it is like calling a symphony Beethovian rather than Vanbeethovian after Ludwig van Beethoven, except that the preposition happens to be written attached to Cartes nowadays so it is harder to recognize.

There was considerably more freedom in spelling in those days, so both des Cartes and Descartes were probably acceptable. Note that des literally means "of the" van means "of". Descartes would originally have meant "of Cartes" and presumably some distant ancestor came from a village called Cartes So when his name was latinised they dropped the 'of' part and based it on the main part - cartes.

Brad Brad 2, 1 1 gold badge 15 15 silver badges 28 28 bronze badges. The term carte for map predates Descartes. According to dictionary. The similarity appears to be entirely coincidental. Per the Magna Carta, carta is Latin. I don't know where KeithThompson got his phantom h from.

The coordinate plane is divided into four quadrants. Quadrant one QI is the top right fourth of the coordinate plane, where there are only positive coordinates.

Quadrant two QII is the top left fourth of the coordinate plane. Quadrant three QIII is the bottom left fourth. He found that he could not doubt that he himself existed, as he was the one doing the doubting in the first place. Cartesians adopted an ontological dualism of two finite substances, mind spirit or soul and matter.

The essence of mind is self-conscious thinking; the essence of matter is extension in three dimensions. Humans obtain general knowledge by contemplating innate ideas of mind, matter, and God. The y-axis runs along the intersection of the floor and the right wall. The z-axis runs up from the floor toward the ceiling along the intersection of the two walls. The x-axis and y-axis represent the first two dimensions; the z-axis, the third dimension.

In a graphic image, the x and y denote width and height; the z denotes depth. In the simplest terms possible, a z-dimension is the distance from the bottom of a cuvette to the center of the sample window. Typically this z-dimension or centre height of the window is one of three heights: 8.

Eulerian refers to the Swiss mathematician Leonhard Euler, who invented graph theory in the 18th century. The default coordinate system in OpenGL TM is right-handed: the positive x and y axes point right and up, and the negative z axis points forward.

Positive rotation is counterclockwise about the axis of rotation. Skip to content Where did the Cartesian plane come from? Why is it called Cartesian? Is Y or Z vertical? What is Cartesian named after? Here is an example of the use of the "a" variable. The result 13 is displayed. The value of a can be checked by typing a and enter. The midpoint of the line segment connecting the point x 1 , y 1 to point x 2 , y 2 is.

Verify that the two distances d A,M and d M,B are equal. If M is the midpoint of the segment from A to a point B, then what are coordinates of B? Hint: Plotting the points will probably help. The most important reason for plotting points is to study relationships between variables. Consider, for example, the fund raising history of a small public radio station. The table below gives contribution amounts for several years.

In order to have a useful plot of this data we will need to have different scales on the two axes. From the scatter plot one sees easily that while contributions are rising, they increased more rapidly in the early years.

This visual representation of the data makes trends and patterns more obvious than they are from the data table. There is a Java tool called Scatter Plot which may be used to make scatter plots. To enter a point you type its coordinates into the text box labeled Coordinates and press the enter key. The format for entering coordinates is number,number. For example, to enter the first point from the table above you would type 3,10 and then press enter.

If your entry is in the correct form, then the text box clears and is ready to accept the next point.