Materials enter the public domain if...
Materials can enter the public domain when copyright term expires, protection is not renewed (renewals are not available for new works), the creator donates the work to the public domain, or the materials are a work of the US Government.
Common knowledge, well-known facts, your own ideas or opinions, and information that is considered public domain do not need to be cited in your writing.
Domain Eukarya consists of the most kingdoms of the three domains.
IP addresses, DNS database, Name Servers, and the Domain Name Space.
Camille Saint-Saens became a professor at the Ecole Niedermeyer from 1860 to 1867 where Gabriel Fauré became one of his students. Unfortunately their record are not in the public domain.
IP addresses, DNS database, Name Servers, and the Domain Name Space.
Well... The four Kingdoms in the domain Eukarya are Animilia, Protistia, Plantae, and Fungi.
Using Vivaldi's "Four Seasons" music on a corporate DVD requires consideration of copyright laws. While Vivaldi's compositions are in the public domain, specific recordings may still be protected by copyright. To avoid legal issues, it's best to use a recording that is explicitly labeled as public domain or obtain a license for a specific recording if it's still under copyright. Always check the licensing terms associated with the music you intend to use.
Cultural/geo-political, joint, tactical, and technical
Four leafed clover is considered to be lucky.
silk
The length of the material The cross-sectional area of the material The resistivity of the material The temperature of the material