The dissertation is also termed a thesis. A dissertation refers to a research project done as a part of a graduation or post-graduation degree. The dissertation allows students to show their research and findings against the proposition or question that they have already chosen themselves. This research and findings help to analyze and do an assessment to determine the final grades of the student.
There are different types of dissertations. This depends upon the type, of course, you are doing.
Broadly, there are two dissertations. One is an empirical dissertation, and the other is a non-empirical dissertation.
Empirical refers to the collection of data, for example, the data required in psychological degree. The empirical one usually in life science subjects may or may not be fully centered on laboratory work.
Non-empirical dissertations can be collected from the existing data or making arguments in others’ work. This involves a lot of reading from books and other resources available. In the non-empirical one, you don’t have to just explain what others have researched. Still, you also have to carefully analyze their work and look for practical applications as well.
The length can vary depending upon the level of education you are in. if you are at the undergraduate level, then it can be around 10,000-12,000 words. If you are at the master’s level, then it will be 15,000-25,000 words, and at the Ph.D. level, it will be 50,000 words or more.