Search results
Results from the WOW.Com Content Network
The following other wikis use this file: Usage on ar.wikipedia.org ليزرديسك; Usage on ca.wikipedia.org Laserdisc; Usage on de.wikipedia.org
The following other wikis use this file: Usage on bg.wikipedia.org Стандарти за безопасност на работното място
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file
This logo image consists only of simple geometric shapes or text. It does not meet the threshold of originality needed for copyright protection, and is therefore in the public domain. Although it is free of copyright restrictions, this image may still be subject to other restrictions.
This is a Scalable Vector Graphics (SVG) image of a registered trademark or copyrighted logo. If non-free content restrictions apply, this image should not be rendered any larger than is required for the purposes of identification and/or critical commentary. See Wikipedia:Logos.
Laser engraving metal plates are manufactured with a finely polished metal, coated with an enamel paint made to be "burned off". At levels of 10 to 30 watts, excellent engravings are made as the enamel is removed quite cleanly. Much laser engraving is sold as exposed brass or silver-coated steel lettering on a black or dark-enamelled background.
Date/Time Thumbnail Dimensions User Comment; current: 12:56, 27 December 2022: 40 × 38 (1,015 bytes): Spinningspark: Reverted to version as of 01:25, 2 June 2006 (UTC). This change has broken at least two articles
A vector field V defined on an open set S is called a gradient field or a conservative field if there exists a real-valued function (a scalar field) f on S such that = = (,,, …,). The associated flow is called the gradient flow , and is used in the method of gradient descent .