Dunkirk: Where History Happened. We visit 10 places connected with the remarkable evacuation of the British Expeditionary Force from northern France in 1940. This feature was first published in the April 2010 edition of BBC History Magazine. Tuesday 25th May 2010.
The seepage velocity is less than the actual flow rate of the liquid or gas in the pores because the fluid moves only through the portion of the cross-sectional area S that is occupied by the pores.
Downstream or download speed is the term given to the data that your computer receives from the Internet. Whenever you download music, pictures, webpages and other documents, you are using your computer's downstream bandwidth. Cable modems are typically rated at 1 to 2 megabits per second (Mbps). This means that you can download up to 2 megabits of data each second operating at full speed. Upstream vs. Downstream. Cable modems have what is known as asymmetrical speeds because upstream and downstream capabilities are different.