- published: 04 Mar 2014
- views: 5
An Internet media type is a two-part identifier for file formats on the Internet. The identifiers were originally defined in RFC 2046 for use in email sent through SMTP, but their use has expanded to other protocols such as HTTP, RTP and SIP. These types were called MIME types, and are sometimes referred to as Content-types, after the name of a header in several protocols whose value is such a type. The original name MIME type referred to usage to identify non-ASCII parts of email messages composed using the MIME (Multipurpose Internet Mail Extensions) specification. Without MIME types, email clients would not be able to understand if an attachment file were a PNG file or a spreadsheet and would not be able to show the attachment appropriately.
A media type is composed of two or more parts: A type, a subtype, and one or more optional parameters. For example, subtypes of text
have an optional charset
parameter that can be included to indicate the character encoding e.g. text/html; charset=UTF-8
), and subtypes of multipart
type often define a boundary
between parts. Allowed charset
values are defined in the list of IANA character sets.
Mass media refers collectively to all media technologies that are intended to reach a large audience via mass communication. Broadcast media (also known as electronic media) transmit their information electronically and comprise television, film and radio, movies, CDs, DVDs and some other devices like cameras and video consoles. Alternatively, print media use a physical object as a means of sending their information, such as a newspaper, magazines, brochures, newsletters, books, leaflets and pamphlets. The term also refers to the organizations which control these technologies, such as television stations or publishing companies.Internet media is able to achieve mass media status in its own right, due to the many mass media services it provides, such as email, websites, blogging, Internet and television. For this reason, many mass media outlets have a presence on the web, by such things as having TV ads which link to a website, or having games in their sites to entice gamers to visit their website. In this way, they can utilise the easy accessibility that the Internet has, and the outreach that Internet affords, as information can easily be broadcast to many different regions of the world simultaneously and cost-efficiently. Outdoor media is a form of mass media which comprises billboards, signs, placards placed inside and outside of commercial buildings and /objects like shops and buses, flying billboards (signs in tow of airplanes), blimps, and skywriting. Public speaking and event organising can also be considered as forms of mass media.