C-style example:
sometype array [P][Q][R];
addr (array,I,J,K) = (char *)array + sizeof (sometype)*(I*Q*R + J*R + K)
Vizio has an array of 3D TV's available and can be purchased at most big box and electronics stores.
All multi-dimensional arrays are represented as arrays of arrays. That is, each element of the array is itself an array. Thus a two-dimensional array can be thought of as being a one-dimensional array where every element is a one-dimensional array. A three-dimensional array is therefore a one-dimensional array of two-dimensional arrays. And so on. The actual memory layout of a multi-dimensional array is no different to that of a one-dimensional array of the same size: int a[12]; int b[3][4]; Assuming a 4-byte int, the amount of memory allocated to a is 12 x 4 = 48 bytes. The array b is essentially an array where each element holds an array of 4 integers, thus each element is 16 bytes in length. Given there are 3 such elements in total, the total size of b is 3 x 16 = 48 bytes, the same as was allocated to a. Although the allocations are exactly the same in terms of size, the layouts differ. The array a is an array of twelve 4-byte elements (of type int) whereas array b is an array of three 16-byte elements, each of which is itself an array of four 4-byte elements (of type int). This changes the way we refer to the individual elements of the array. Every element in an array is referred to by its offset address from the start of the array. This is determined by multiplying its zero-based index by the element size. In the case of a, every element is 4-bytes in length, thus element a[2] refers to the element that is offset 2 x 4 = 8 bytes from the start of the array. But in the case of b, however, b[2] would refer to the 16-byte element that is offset 2 x 16 = 32 bytes from the start of the array. Given that we're actually referring to an element which is itself a 4-element array, we must use a second subscript to refer to the elements of that array. Thus b[2][3] would refer to the integer that is offset 3 x 4 bytes from the start of the array referred to by b[2]. Extending this idea into three-dimensions is simply a matter of taking a third subscript into account.
The element in the fourth period with 3 3d electrons is titanium (element #22).
Lithium
The element with one 3d electron is manganese (Mn), which has the electron configuration [Ar] 3d^5 4s^2.
Chromium is a 3d element. chromium is a metal.
B. 1s22s22p63s23p64s23d5----Chromium: [Ar]1s22s22p63s23p63d54s1Manganese: [Ar]1s22s22p63s23p63d54s2
The web address of the 3D Center Of Art And Photography is: http://www.3dcenter.us
1s2 2s2 2p6 3s2 3p6 4s2 3d5
Vanadium (V) contains 5 electrons in its 3d orbitals.
In digital imaging, a pixel (or picture element) is a single point in a raster image - that is a pixel is always a 2D element. The word pixel is based on a contraction of pix ("pictures") and el (for "element"); similar formations with el for "element" include the words: voxel and texel.The corresponding term in 3D would be a voxel, also call volumetrix pixel - a volume (3D) element.
An array is any contiguous block of allocated memory that contains one or more instances of the same data type, where each instance (known as an element) is accessible independently of the others via the element's unique index (calculated as a zero-based offset from the start of the array).Arrays are typically one-dimensional (a string of characters is an example of a one-dimensional array) but they can be multi-dimensional. This allows data to be conceptualised as a rectangular grid, with rows and columns (a two-dimensional array), or as a cuboid (a three-dimensional array).Going beyond three-dimensions is difficult to imagine in a 3D world, however a four-dimensional array can be likened to a cuboid where each element in the cuboid contains a one-dimensional array. A six-dimensional array is therefore a cuboid where each element contains a cuboid, and so on.Arrays can be static or dynamic. Static arrays are those where the dimensions are known at compile time and are allocated on the stack. Dynamic arrays are dimensioned at runtime and allocated on the heap.The following are examples of static arrays:char x[10]; // Allocates memory for 10 characters.int sudoku[9][9]; // Allocates memory for 81 integers (9x9).int rubik[3][3][3]; Allocates memory for 27 integers (3x3x3).It's important to remember that dimension indices are zero-based, because they represent memory offsets from the beginning of the array. Therefore the first element of array x is x[0], and the last is x[9]. x itself is an alias to the block of memory allocated to the array named x, and is therefore the same as the address occupied by element x[0].Offsets are calculated by the size of the data in each element, thus x[1] can be found at the address 1*sizeof(char) bytes from the address of x. In multi-dimensional arrays, the offsets are calculated by multiplying the dimensions. Thus rubik[2][0][1] will be found ((2*9)+(0*3)+1)*sizeof(int) bytes from the address of rubik.Dynamic arrays are created by maintaining a pointer to the start of the array. Thus:int * pArray=new int[10]; // Allocates memory to 10 integers on the free store.The value stored in the variable pArray is therefore the start address of the array, the same address occupied by pArray[0].The memory can be released with a call to delete:delete[] pArray;Note the use of [] to indicate that the entire array is to be deleted. If we don't do this, only the first element would be released, causing a memory leak.Multi-dimensional dynamic arrays are a bit trickier to deal with as each dimension adds an extra level of indirection and the array itself is not guaranteed to reside in contiguous memory. In fact, it's easier to think of them as being separate one-dimensional arrays, each with their own pointer, and those pointers residing in their own separate array.However, it's still possible to allocate multi-dimensional arrays in contiguous memory by allocating the memory as a single block, rather than allocating each dimension independently. A separate array of pointers are used to divide the block however you see fit. For instance, to allocate a 5x6 dynamic array of type int, you'd use the following:int ** pp = new int*[5]; // allocate pointer arraypp[0] = new int[5*6]; // allocate the contiguous blockfor(int i=1;i