Jøtul AS is a Norwegian limited company that manufactures cast iron stoves and fireplaces. The head office is situated in Fredrikstad. Jøtul AS is also the parent company in the Jøtul Group, with subsidiaries in the United States, United Kingdom, Denmark, France, Italy, Spain and Poland.

JST connector are electrical connectors manufactured by J.S.T. Mfg. Co. (Japan Solderless Terminal). JST manufactures numerous series (families) and pitches (pin-to-pin distance) of connectors. JST connectors are used in many types of products, and commonly used by electronics hobbyists and consumer products for rechargeable battery packs, battery balancers, battery eliminator circuits, and radio controlled servos. The term "JST" is incorrectly used as a vernacular term meaning a small white electrical connector mounted on PCBs.

JT (Jupiter Tesselation) is an ISO-standardized 3D data format and is in industry used for product visualization, collaboration, CAD data exchange, and in some also for long-term data retention. It can contain any combination of approximate (faceted) data, boundary representation surfaces (NURBS), Product and Manufacturing Information (PMI), and Metadata (textual attributes) either exported from the native CAD system or inserted by a product data management (PDM) system.

JTEKT Corporation TYO: 6473.T is a Japanese multibillion corporation created in January 2006 upon the merger of two companies: Koyo Seiko Co. and Toyoda Machine Works. Toyoda Machine Works. Machine tool sales for North, Central and South America, aftermarket support services, machine re-manufacturing and engineering services supplied by Jtekt Toyoda Americas Corporation [1] H.Q. Arlington Heights, IL and the Re-manufactured Products Division operates out of Wixom, MI, with support offices in Monterrey, Mexico and Itu, Brazil. JTEKT Corporation machine tools are manufactured in Japan via JTEKT Corporation, and Taiwan, via WELE Mechatronics, a "Toyoda Strategic Alliance Company", and exported globally.

Judo (wikt:柔道, jūdō, meaning "gentle way") was originally created in 1882 by Jigoro Kano (嘉納治五郎) as a physical, mental, and moral pedagogy in Japan. It is generally categorized as a modern martial art, which later evolved into a combat and Olympic sport. Its most prominent feature is its competitive element, where the objective is to either throw or take down an opponent to the ground, immobilize or otherwise subdue an opponent with a pin, or force an opponent to submit with a joint lock or a choke. Strikes and thrusts by hands and feet as well as weapons defences are a part of judo, but only in pre-arranged forms (kata, 形) and are not allowed in judo competition or free practice (randori, 乱取り). A judo practitioner is called a judoka. The philosophy and subsequent pedagogy developed for judo became the model for other modern Japanese martial arts that developed from koryū (古流, traditional schools).

A juicer (also known as juicing machine or juice extractor) is a tool used to extract juice from fruits, herbs, leafy greens and other types of vegetables in a process called juicing. It crushes, grinds, and/or squeezes the juice out of the pulp. Some types of juicers can also function as a food processor. Most of the twin gear and horizontal masticating juicers have attachments for crushing herbs and spices, extruding pasta, noodles or bread sticks, making baby food and nut butter, grinding coffee, making nut milk, etc.

Blum GmbH (commonly referred to as "Blum") is an international company that produces hinge-, lift- and runner-systems and the appropriate assembly tools for the cabinet making and furniture industry.

An electrical junction box is an enclosure housing electrical connections, to protect the connections and provide a safety barrier.

A jungle is land covered with dense vegetation dominated by trees. Application of the term has varied greatly during the past recent centuries. Before the 1970s, tropical rainforests were generally referred to as jungles but this terminology has fallen out of usage. Jungles in Western literature can represent a less civilised or unruly space outside the control of civilisation, attributed to the jungle's association in colonial discourse with places colonised by Europeans.

The Junkers Ju 87 or Stuka (from Sturzkampfflugzeug, "dive bomber") was a German dive bomber and ground-attack aircraft. Designed by Hermann Pohlmann, it first flew in 1935. The Ju 87 made its combat debut in 1937 with the Luftwaffe's Condor Legion during the Spanish Civil War and served the Axis forces in World War II. The aircraft was easily recognisable by its inverted gull wings and fixed spatted undercarriage. Upon the leading edges of its faired main gear legs were mounted the Jericho-Trompete (Jericho trumpet) wailing sirens, becoming the propaganda symbol of German air power and the blitzkrieg victories of 1939–1942. The Stuka's design included several innovative features, including automatic pull-up dive brakes under both wings to ensure that the aircraft recovered from its attack dive even if the pilot blacked out from the high g-forces. The Stuka operated with considerable success in close air support and anti-shipping at the outbreak of World War II. It spearheaded the air assaults in the invasion of Poland in September 1939. Stukas were crucial in the rapid conquest of Norway, the Netherlands, Belgium and France in 1940. Although sturdy, accurate, and very effective against ground targets, the Stuka was vulnerable to contemporary fighter aircraft, like many other dive bombers of the war. During the Battle of Britain its lack of maneuverability, speed and defensive armament meant that it required a heavy fighter escort to operate effectively. After the Battle of Britain the Stuka operated with further success in the Balkans Campaign, the African and Mediterranean theaters and the early stages of the Eastern Front where it was used for general ground support, as an effective specialized anti-tank aircraft and in an anti-shipping role. Once the Luftwaffe lost air superiority, the Stuka became an easy target for enemy fighter aircraft on all fronts. It was produced until 1944 for lack of a better replacement. By the end of the war ground-attack versions of the Focke-Wulf Fw 190 had largely replaced the Stuka, but Stukas remained in service until the end of the war. An estimated 6,500 Ju 87s of all versions were built between 1936 and August 1944. Some notable airmen flew the Ju 87. Oberst Hans-Ulrich Rudel was the most successful Stuka ace and the most highly decorated German serviceman of the Second World War.