Scalars include: distance, work, kinetic energy, potential energy, power, mass, density, potential, electricity, current, voltage, magnetic flux and so on.
Question 2: What are the formats of vector diagrams? vector graphics
Common vector diagram formats
File extension MIME type proper name description
. Psapplication/postscript is a vector-based page description language developed and owned by Adobe. Postscript is a powerful stack-based programming language. Supported by many laser printers.
. eps？ Encapsulated PostScript describes the PostScript file of small vector diagram, and compares and describes the file format of the whole page.
. Pdf application /pdf portable PostScript version of the file format, allowing the file to have multiple pages and links. Use with Adobe Acrobat Reader or Adobe e-book reader.
. The application /illustrator adobe illustrator document vector format used by adobe illustrator.
. fh？ Vector format used by macromedia freehand documents.
. Swfapplication/x-shockwave-flashflash is a browser plug-in for playing vector animations contained in SWF files. There are several applications that can create SWF files, including Flash published by Macromedia.
. fla？ Flash source file Shockwave Flash source file can only be used with Macromedia Flash software.
. SVG image/SVG+XML scalable vector graphics is an XML-based vector graphics format, which is defined by the World Wide Web Consortium as the browser standard.
The file format of. Wmf image/x-wmf Windows metafile is used as the format for storing vector and raster images in Microsoft operating system.
. DXFImage/vnd.dxfascidrawingchange is a standard ASCII text file, which is used to store vector diagrams of CAD programs.
. The ISO standard of cgm image /cgm computer graphics metafile was very common in 1990' s, and it was the file exchange standard in the industry. However, with the emergence of a new generation and better formats (such as svg), it is hardly used in today's practice.
Question 3: Electricity. What is a vector? Are these scalars other than these? Size and direction are vectors.
Good judgment
In fact, all you have to do is find your way.
Vector: displacement, velocity, acceleration, angular acceleration, force, torque, momentum, angular momentum, electric field strength, magnetic induction strength, magnetic field strength.
You can have everything.
You'd better write it down.
Remember to adopt. Thank you.
Question 4: What are the common scalars and vectors: force, velocity, acceleration, displacement, impulse, momentum, electric field intensity, magnetic induction intensity, etc.
Scalars include: distance, work, kinetic energy, potential energy, power, mass, density, potential, electricity, current, voltage, magnetic flux and so on.
Scalars have only size but no direction, such as mass, volume, temperature and distance.
Vector has both magnitude and direction, such as force, velocity and displacement.
The difference between vector and scalar:
1, the difference of the concept is that after the unit of measurement is selected, the quantity that only needs to be expressed by numbers is called scalar; The other is that after the measurement unit is selected, in addition to expressing its size with numbers, it also needs a certain direction to explain its nature, which is called vector.
2. The difference of algorithms in middle school physics, such as length, mass, time, density, work, energy, temperature and current intensity. They are all scalars, and scalar operations obey algebraic algorithms. Force, displacement, speed, acceleration, momentum, impulse, electric field intensity, magnetic induction intensity, etc. They are all vectors, and the operation of vectors should follow the parallelogram rule or the triangle rule. A vector is usually represented by a straight line with an arrow. The length of the line segment represents the size of the vector, and the arrow represents the direction of the vector.
3, the difference between symbols and symbols In middle school physics, there are symbol problems in both vectors and scalars. But the sign of vector is fundamentally different from the sign of scalar.
⑴ Vector symbol: On the premise of choosing a positive direction, the symbol of the vector is essentially the direction of the vector. If the vector is positive, it means that the vector is the same as the selected positive direction; A negative vector indicates that it is opposite to the selected positive direction.
⑵ Scalar sign: Although scalars have no direction, some scalars also have positive and negative signs.
Question 5: What are the vector graphics softwares? Common softwares for making vector images are CorelDRAW, Illustrator, AutoCAD and FreeHand.
Question 6: What is the main purpose of vector graphics? Mainly in the printing industry
With the development of 3D and FLASH, we mainly use it to model and then import it into MAX lofting or other processing, or use it in FLASH animation or sculpture.
Digital images are divided into two categories, one is bitmap and the other is vector. Bitmaps are composed of pixels with different brightness and colors, which are suitable for representing a large number of image details and can well reflect the changes of light and dark, complex scenes and colors. Its characteristic is that it can show realistic image effect, but the file is relatively large, and the definition will be reduced when zooming, and sawtooth will appear. Bitmaps have various file grids, such as JPEG, PCX, BMP, PSD, PIC, GIF and TIFF.
Bitmap images are very effective and will be distorted after enlargement.
Vector graphics use straight lines and curves to describe graphics. The elements of these graphs are points, lines, rectangles, polygons, circles and arcs. They are all calculated by mathematical formulas, so vector graphics files are generally small. The advantage of vector graphics is that it will not be distorted regardless of enlargement, reduction and rotation; The disadvantage is that it is difficult to express realistic image effects with rich color levels, and it takes some time to display vector diagrams. Vector graphics are mainly used for illustrations, text, logos and other graphics that can be scaled freely. Common file formats are AI, etc.
The image effect of vector diagram is poor, and it will not be distorted after amplification.
Question 7: What are the file formats of vector graphics *? Bw is a black-and-white graphic file format containing various pixel information.
*.cdr is a graphic file format in CorelDraw. This is a graphic image file format that can be used in all CorelDraw applications.
*.col is a palette file format created by Autodesk Animator, Autodesk Animator Pro and other programs, which stores RGB values of each item in the palette.
*.dwg is a graphic file format used in AutoCAD.
*. Drawing exchange binary
*.dxb is a graphic file format created by AutoCAD.
*.dxf(Autodesk Graphic Interchange Format)
*.dxf is a graphic file format in AutoCAD. It stores graphics in ASCII, which is very accurate in representing the size of graphics, and can be called and edited by large-scale software such as CorelDraw and 3DS.
*.wmf(Windows metafile format)
*.wmf is a common metafile format in Microsoft Windows, which has the characteristics of short file and modeling mode. The whole graphics are often spliced by independent components, but their graphics are often rough and can only be edited in M icrosoft Office.
*. Enhanced metafile
*.emf is a Windows 32-bit extended metafile format developed by Microsoft. The overall design goal is to make up for the shortcomings of *. The wmf file format used in Microsoft windows 3.1(win16) makes metafiles easier to use.
*. encapsulated PostScript
*. Icon file
*.ico is the icon file format of Windows.
*. Image file format
*.iff is a graphic file format used on super graphics processing platforms such as Amiga, which is widely used in Hollywood special effects movies and vividly reproduces the original scene. Of course, this format will consume a lot of computer resources, such as memory and external storage.
*. pound mass
*.lbm is a graphic file format used in Deluxe Paint, and its encoding method is similar to *.iff.
*. Magazine
*.mag is a graphic file format commonly used by Japanese people.
*. Apple Computer
*.mac is a grayscale graphics file format used in Macintosh, which can only be used in Macintosh brushes with a resolution of 720×567.
etc
Question 8: What is a vector diagram and what are the formats of pictures? Vector diagram can be cut into bitmap, but it is technically difficult to convert bitmap into vector diagram. What is a vector diagram? It consists of vector contour lines and vector color blocks. The size of the file is determined by the complexity of the image, and has nothing to do with the size of the graphics. Vector images can be infinitely enlarged without blurring. Many images we usually see (such as digital photos) are called pixel maps (also called bitmaps, raster maps and bitmaps). Pixel maps are composed of many pixels like small squares, and the pixels in the bitmap are represented by their position values and color values. Many graphic design software support converting pixel graphics into vector graphics, so that we can edit on the basis of vector graphics to achieve the desired effect.