ASTM F2413-11 Requirements. ASTM F2413-11 Standard Specification for Performance Requirements for Protective (Safety) Toe Cap Footwear covers minimum requirements for the design, performance, testing and classification of protective footwear. The purpose of this standard is the certification of protective footwear.
Chat vs Email. Chat and Email are two new communication media that was created along with the internet. In the most basic, the two are very similar, carrying messages in textual form from one device to another. The main difference between the two is with the speed that they occur.
Chat rooms -- like e-mail, instant messaging (IM) and online social networks -- are virtual extensions of real-world human interaction. Chat rooms are online spaces where users communicate with one another through text-based messages. It's like a virtual cocktail party, where strangers gather to flirt, argue about politics and sports, ask for advice, talk about shared hobbies and interests, or simply hang out. Chat rooms have played an important role in the evolution of interpersonal communication over computer networks. E-mail came first in 1972 [source: NetHistory ].