page_title: Cue sports
section_title: Chalk
hierarchical_section_title: Cue sports / Equipment / Chalk
caption_attribution_description: English: Billiard chalk is used to increase friction between the cue tip and the cue ball during a billiards game.
context_page_description: Cue sports, also known as billiard sports,
  are a wide variety of games of skill generally played with a cue stick, which is used to strike billiard balls and thereby cause them to move around a cloth-covered billiards table bounded by elastic bumpers known as cushions.
  Historically, the umbrella term was billiards. While that familiar name is still employed by some as a generic label for all such games, the word's usage has splintered into more exclusive competing meanings in various parts of the world. For example, in British and Australian English, billiards usually refers exclusively to the game of English billiards, while in American and Canadian English it is sometimes used to refer to a particular game or class of games, or to all cue games in general, depending upon dialect and context. In colloquial usage, the term billiards may be used to refer to pocket billiards games, such as pool, snooker, or Russian pyramid.
  There are 3 major subdivisions of games within cue sports:
context_section_description: Chalk is applied to the tip of the cue stick, ideally before every shot, to increase the tip's friction coefficient so that when it impacts the cue ball on a non-center hit, no miscue (unintentional slippage between the cue tip and the struck ball) occurs. Chalk is an important element to make good shots in pool or snooker. Cue tip chalk is not actually the substance typically referred to as "chalk" (generally calcium carbonate), but any of several proprietary compounds, with a silicate base. It was around the time of the Industrial Revolution that newer compounds formed that provided better grip for the ball. This is when the English began to experiment with side spin or applying curl to the ball. This was shortly introduced to the American players and is how the term "putting English on the ball" came to be. "Chalk" may also refer to a cone of fine, white hand chalk; like talc (talcum powder) it can be used to reduce friction between the cue and bridge hand during shooting, for a smoother stroke. Some brands of hand chalk actually are made of compressed talc. (Tip chalk is not used for this purpose because it is abrasive, hand-staining and difficult to apply.) Many players prefer a slick pool glove over hand chalk or talc because of the messiness of these powders; buildup of particles on the cloth will affect ball behavior and necessitate more-frequent cloth cleaning.
  Cue tip chalk (invented in its modern form by straight rail billiard pro William A. Spinks and chemist William Hoskins in 1897) is made by crushing silica and the abrasive substance corundum or aloxite (aluminium oxide), into a powder. It is combined with dye (originally and most commonly green or blue-green, like traditional billiard cloth, but available today, like the cloth, in many colours) and a binder (glue). Each manufacturer's brand has different qualities, which can significantly affect play. High humidity can also impair the effectiveness of chalk. Harder, drier compounds are generally considered superior by most players.
caption: Billiard chalk is applied to the tip of the cue.
exif: {"Image ImageWidth": "2256", "Image ImageLength": "1500", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Make": "NIKON CORPORATION", "Image Model": "NIKON D40", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS5 Windows", "Image DateTime": "2015:09:06 09:55:47", "Image ExifOffset": "280", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "926", "Thumbnail JPEGInterchangeFormatLength": "0", "EXIF ExposureTime": "1/160", "EXIF FNumber": "28/5", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2008:03:19 20:47:26", "EXIF DateTimeDigitized": "2008:03:19 20:47:26", "EXIF ShutterSpeedValue": "915241/125000", "EXIF ApertureValue": "2485427/500000", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "9/2", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash fired, auto mode, return light not detected", "EXIF FocalLength": "38", "EXIF SubSecTime": "20", "EXIF SubSecTimeOriginal": "20", "EXIF SubSecTimeDigitized": "20", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2000", "EXIF ExifImageLength": "1500", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CVAPattern": "[0, 2, 0, 2, 2, 1, 1, 0]", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "1", "EXIF FocalLengthIn35mmFilm": "57", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "None", "EXIF Contrast": "Soft", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF SubjectDistanceRange": "0"}