Data that contains a lot of repetition or patterns can be compressed very well. Examples include text files, images with large areas of the same color, and files that contain long sequences of the same symbols.
Attachments may be compressed to reduce file size for more efficient storage and transmission. Compression can also speed up data transfer and save bandwidth.
compressed marble
Water can't be compressed. Water, like anything else, can be compressed. The change in volume even at huge pressure is very small, but the extent of compressibility is not an element of this question
Compressed helium does not lift more than regular helium. The lifting force generated by a gas is determined by its density, regardless of whether it is compressed or not. Helium is already a very low-density gas, so compressing it would not significantly increase its lifting capacity.
Using Boyle's Law, we can calculate the new pressure of the compressed gas. Boyle's Law states that the pressure and volume of a gas are inversely proportional if the temperature is constant. By rearranging the formula P1V1 = P2V2, we find that the compressed gas will have a pressure of 4 atm.
No. the format of a file is the description about how the data in it are structured. Thus the data described by the format can be compressed but the format itself can not.
The basic principle (and a very simplified explanation) of data compression is to look for repetitions in data, and replace it by abbreviations. This means that not all data can be compressed - it is fairly easy to show (do some reading on the "counting argument") that no matter what compression method is used, there will always be some data that can't be compressed. On the other hand, some data can be compressed quite a lot. The maximum compression factor depends on what kind of data is saved. For example, typically a text file (like, one created with Word or Excel) will compress in a ratio of 2 or 3 (the compressed file will be smaller by a factor of 2-3 than the original data), while, to give another example, a JPEG (JPG) image can hardly be compressed at all - because it is already stored in compressed form. In theory, data compression can be programmed in almost any language. After all, all that is required is to read a file (other input is possible, though), do some manipulations (according to certain standards), and save it again.
an image file
Multiplexes are a bundle of TV services that has been compressed into a data stream. These are combined data in a single channel.
A compressed zip folder is data that has been shrunk from its original size to take less disk space.
bash
For CSLISP, the TCP header is reduced from about 20 characters to about 7. The actual data is not compressed, so you don't save very much in transmission costs per packet.
Voip
Yes, electricity is a very good means of transmitting data.
A zip drive stores compressed data. A DVD writer transfer data....
This depends on how well your data is secured, coded, or encoded. If you have a well secured document with a hard-to-crack code your data is likely very safe. Meanwhile data with no security is probably not too safe.
Yes. It is very powerful with compressed air though.