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A pencil is a writing implement or art medium usually constructed of a narrow, solid pigment core inside a protective casing. The case prevents the core from breaking, and also from marking the user’s hand during use. Pencils create marks via physical abrasion, leaving behind a trail of solid core material that adheres to a sheet of paper or other surface. They are noticeably distinct from pens, which dispense liquid or gel ink that stain the light color of the paper...

Kelly LeBrock (born March 24, 1960) is an American actress and model. Her acting debut was in The Woman in Red co-starring with comedian Gene Wilder. She also starred in the film Weird Science, directed by John Hughes. Early life LeBrock was born in New York City, but brought up in London, England and in the countryside in Sussex...

Outer space (often simply called space) is the void that exists beyond any celestial body including the Earth. It is not completely empty (i.e. a perfect vacuum), but contains a low density of particles, predominantly hydrogen plasma, as well as electromagnetic radiation, magnetic fields, and neutrinos. Theoretically, it also contains dark matter and dark energy...

Robyn Rihanna Fenty (born February 20, 1988), better known as simply Rihanna (/riˈɑːnə/ ree-YAH-nə or /riˈænə/ ree-AN-ə), is a R&B recording artist. Born in Saint Michael, Barbados, Rihanna moved to the United States at the age of 16 to pursue a recording career under the guidance of record producer Evan Rogers. She subsequently signed a contract with Def Jam Recordings after auditioning for then-label head Jay-Z...

A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

Gymnastics is a sport involving performance of exercises requiring physical strength, flexibility, agility, coordination, balance, grace and passion for the sport. Internationally, all of the gymnastic sports are governed by the Fédération Internationale de Gymnastique (FIG) with each country having its own national governing body affiliated to FIG. Competitive Artistic gymnastics is the best known of the gymnastic sports...

Wetting is the ability of a liquid to maintain contact with a solid surface, resulting from intermolecular interactions when the two are brought together. The degree of wetting (wettability) is determined by a force balance between adhesive and cohesive forces. Wetting is important in the bonding or adherence of two materials. Wetting and the surface forces that control wetting are also responsible for other related effects, including so-called capillary effects...