What are the differences between 'Desk Research' and 'Field Research'?

Field research refers to gathering primary data from a natural environment without doing a lab experiment or a survey. It is a research method suited to an interpretive framework rather than to the scientific method. To conduct field research, the sociologist must be willing to step into new environments and observe, participate, or experience those worlds.

Desk Research is where you collect and analyse information that already exists but has not already been collected together. This information can be found in a variety of informative sources such as the yellow pages. As well as understanding the market, company can also use desk research to examine factors inside the business, such as sales figures and financial records.

Desk research is gathering and analyzing from already available and known to work technology and info but ,

field research is  the research to find out what works and what doesn't work using desk research with other means to come up with a design to test a new technology to see if it works or not.