Sinoatrial node. The sinoatrial node (SAN; also known as sinus node) is a group of cells located in the wall of the right atrium of the heart.
How Do Web Browsers Work? The World Wide Web is a system of Internet servers that support specially formatted documents. Web browsers are used to make it easy to access the World Wide Web. Browsers are able to display Web pages largely in part to an underlying Web protocol called HyperText Transfer Protocol (HTTP).
Opera (web browser) Opera is a web browser for Windows, macOS, and Linux operating systems. It is developed by Opera Software. On 4 November 2016 Opera's consumer business, including the browser, was acquired by a Chinese group of investors under the name Golden Brick Capital Private Equity Fund I Limited Partnership.