Drill

A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for boring holes in various materials or fastening various materials together with the use of fasteners. The attachment is gripped by a chuck at one end of the drill and rotated while pressed against the target material. The tip, and sometimes edges, of the cutting tool does the work of cutting into the target material. This may be slicing off thin shavings (twist drills or auger bits), grinding off small particles (oil drilling), crushing and removing pieces of the workpiece (SDS masonry drill), countersinking, counterboring, or other operations.

Drills are commonly used in woodworking, metalworking, construction and do-it-yourself projects. Specially designed drills are also used in medicine, space missions and other applications. Drills are available with a wide variety of performance characteristics, such as power and capacity.

History

Around 35,000 BCE, Homo sapiens discovered the benefits of the application of rotary tools. This would have rudimentarily consisted of a pointed rock being spun between the hands to bore a hole through another material. This led to the hand drill, a smooth stick, that was sometimes attached to flint point, and was rubbed between the palms. This was used by many ancient civilizations around the world including the Mayans. The earliest perforated artifacts, such as bone, ivory, shells and antlers found, are from the Upper Paleolithic era.

List of The Worst Witch episodes

The Worst Witch is a British ITV television series about a group of young witches at a Magic Academy. The series stars Georgina Sherrington and Felicity Jones, and is based on The Worst Witch books by Jill Murphy. It aired for a total of three series between 1998 and 2001 before being followed by Weirdsister College. Most episodes revolved around the school, following the adventures of Mildred and her friends. The series was later followed by The New Worst Witch, which ran for two series and chronicled the experiences of Mildred's younger cousin Hettie as she attended the school.

Season 1 (1998–1999)

Season 2 (1999–2000)

Season 3 (2000–2001)

References

External links

Power

Power may refer to:

Science

Mathematics

Physics

Computing

Top Five

Top Five is a 2014 American comedy film written and directed by Chris Rock. The film, which stars Rock, Rosario Dawson, and Gabrielle Union, was screened in the Special Presentations section of the 2014 Toronto International Film Festival. The movie follows New York City comedian and film star Andre Allen (Rock), who has to confront his past and comedic career while doing an interview with journalist Chelsea Brown (Dawson). The film was released on December 12, 2014, by Paramount Pictures.

Plot

New York Times reporter Chelsea Brown is spending a day interviewing comedian and recovering alcoholic Andre Allen, star of the hit film franchise Hammy The Bear, about a cop in a bear suit. He is attempting a foray into serious films with Uprize, in which he portrays Haitian Revolution figure Dutty Boukman, and sensitive to criticism, particularly by Times critic James Nielson, whose previous reviews of Andre's work have been negative and insulting. As the interview begins in his limousine, Andre recalls his lowest point, when he was in Houston in 2003 and met Jazzy Dee, who supplied him with drugs, alcohol and women. Yet after Jazzy refused to pay the women, they contended they were raped, leading to Andre's arrest.