German inventions

thumb|upright=1.35|Flat-panel display|Flat-screen television receivers on display for sale at a consumer electronics store in May 2008

thumb|An old rotary dial telephone thumb|AT&T push button telephone made by [[Western Electric, model 2500 DMG black, 1980]]

thumb|Classic bell of a bicycle A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A is called a cyclist, or bicyclist.

A capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other. It is a passive electronic component with two terminals. A capacitor was originally known as a condenser, a term still encountered in a few compound names, such as the condenser microphone. Colloquially, a capacitor may be called a cap.

Volapük (; , 'Language of the World', or ) is a constructed language created in 1879 and 1880 by Johann Martin Schleyer, a Roman Catholic priest in Baden, Germany. Notable as the first major constructed international auxiliary language, it primarily drew from Germanic languages. Its grammar is inspired largely by German, although it was heavily regularized by Schleyer, while its lexicon is rooted mostly in English, with additional influence from German, the Romance languages, and Russian. Despite some roots remaining recognizable, many words were altered beyond recognition, as Schleyer sought

thumb|Igniting a match on the striking strip of a matchbox

nuclear reaction splitting an atom into multiple parts

Cocaine is a stimulant of the central nervous system and tropane alkaloid, derived primarily from the leaves of two coca species native to South America: Erythroxylum coca and E. novogranatense. The leaves are processed into cocaine paste, a crude mixture of coca alkaloids, from which cocaine base is isolated and then converted to cocaine hydrochloride. Although total synthesis is possible, it is complex and not used for production. Historically, cocaine was a standard topical medication used as a local anesthetic with intrinsic vasoconstrictor properties. However, its high abuse potential, ad

Accordions (from 19th-century German ', from '—"musical chord, concord of sounds") are a family of box-shaped musical instruments of the bellows-driven free reed aerophone type (producing sound as air flows past a reed in a frame). The essential characteristic of the accordion is to combine in one instrument a melody section, also called the diskant, usually on the right-hand keyboard, with an accompaniment or Basso continuo functionality on the left-hand. The musician normally plays the melody on buttons or keys on the right-hand side (referred to as the keyboard or sometimes the manual), and

Aspirin () is the genericized trademark for acetylsalicylic acid (ASA), a nonsteroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation, and as an antithrombotic. Aspirin is used to treat inflammatory conditions including Kawasaki disease, pericarditis, and rheumatic fever.

electronic circuit formed on a small, flat piece of semiconductor material

sausage in bun, usually with toppings

device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image

a magnifying system capable of showing the interior or surface of a microscopic object by means of directed electron beams

thumb|A Sunwin trolleybus in Shanghai, on the world's oldest operating trolleybus system thumb|Solaris Bus & Coach|Solaris trolleybus on the Arnhem trolleybus system in the Netherlands thumb|right|Video of a trolleybus in Ghent, Belgium thumb|right|New Flyer trolleybus in [[San Francisco]] A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tram (in the 1910s and 1920s), road tram or simply trolley) is an electric bus that draws power from dual overhead lines (generally suspended from roadside posts) using spring-loaded or pneumatically raised trolley poles. Tw

device for evenly printing ink onto a print medium

internal combustion engine with quality rotational frequency governing, internal mixture formation, lean air-fuel-ratio, diffusion flame and compression ignition

thumb|upright=1.2|This fax machine from 1999 used relatively new inkjet printing technology on normal paper. thumb|upright=1.2|Like many fax machines, this 1990 model used thermal printing on relatively expensive [[thermal paper which came in rolls. The roll was inserted into a compartment in the machine.]]

thumb|An ignited lighter thumb|upright|Disposable lighter A lighter is a portable device which uses mechanical or electrical means to create a controlled flame, and can be used to ignite a variety of flammable items, such as cigarettes, butane gas, fireworks, candles, or campfires. A lighter typically consists of a metal or plastic container filled with a flammable liquid, a compressed flammable gas, or in rarer cases a flammable solid (e.g. rope in a trench lighter); a means of ignition to produce the flame; and some provision for extinguishing the flame or else controlling it to such a degre

3,4-Methylenedioxymethamphetamine (MDMA), commonly known as ecstasy (tablet form), and molly (crystal form), is an entactogen with stimulant and minor psychedelic properties.

thumb|A Tektronix model 475A portable analog oscilloscope, a typical instrument of the late 1970s thumb|Oscilloscope cathode-ray tube, the left square-shaped end would be the blue screen in the upper device when built in. thumb|Typical display of an analog oscilloscope measuring a sine wave signal with 10 kHz. From the grid inherent to the screen together with the user-set parameters of the device shown at the upper display rim, the user may calculate the frequency and the voltage of the measured signal. Modern digital oscilloscopes set the measurement parameters and calculate/display the

thumb|140px|The repeating unit within polyethylene in the most stable staggered conformation

Amphetamine is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy; it is also used to treat binge eating disorder in the form of lisdexamfetamine. Historically, it has been used to treat nasal congestion and depression. Amphetamine is also used as an athletic performance enhancer and cognitive enhancer, and recreationally as an aphrodisiac and euphoriant. It is a prescription drug in many countries, and unauthorized possession and distribution of amphetamine are often tightly controlled due to the significant

smartcard for cellular devices containing authentication information necessary for connecting to the cell network

thumb|Two-barrel downdraft Holley Performance Products|Holley 2280 carburetor thumb|Cross-sectional schematic

instrument used for measuring ionizing radiation

type of selective fire rifle

thumb|A relay thumb|Electromechanical relay principle thumb|Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts thumb|An automotive-style miniature relay with the dust cover taken off

Methadone, sold under the brand names Dolophine and Methadose among others, is a potent synthetic opioid used medically to treat chronic pain and opioid use disorder. Prescribed for daily use, the medicine relieves cravings and opioid withdrawal symptoms. Withdrawal management using methadone can be accomplished in less than a month, or it may be done gradually over a longer period of time, or simply maintained for the rest of the patient's life. While a single dose has a rapid effect, maximum effect can take up to five days of use. After long-term use, in people with normal liver function, ef

digital app distribution platform for iOS/iPadOS

thumb|class=skin-invert-image|Barbituric acid, the [[parent structure of all barbiturates]]

Aniline (From , meaning 'indigo shrub', and -ine indicating a derived substance) is an organic compound with the formula . Consisting of a phenyl group () attached to an amino group (), aniline is the simplest aromatic amine. It is an industrially significant commodity chemical, as well as a versatile starting material for fine chemical synthesis. Its main use is in the manufacture of precursors to polyurethane, dyes, and other industrial chemicals. Like most volatile amines, it has the odor of rotten fish. It ignites readily, burning with a smoky flame characteristic of aromatic compounds. It

medium used to store data in the form of magnetic fields

A vlog, also known as a video blog or video log, is a form of blog for which the medium is video. Vlog entries often combine embedded video (or a video link) with supporting text, images, and other metadata. Entries can be recorded in one take or cut into multiple parts. Like traditional blogging, video blogging (or vlogging) focuses on personal topics centering on the creator. For example, makeup routines, book recommendations, and recipe videos.

artificial nitrogen fixation process which is the main industrial procedure for the production of ammonia nowadays

internal combustion engine designed to run on gasoline

Phase Alternating Line (PAL) is a colour encoding system for analogue television. It was one of three major analogue colour television standards, the others being NTSC and SECAM. In most countries it was broadcast at 625 lines, 50 fields (25 frames) per second, and associated with CCIR analogue broadcast television systems B, D, G, H, I and K. The articles on analogue broadcast television systems further describe frame rates, image resolution, and audio modulation.

Thalidomide, sold under the brand names Contergan, Distaval and Thalomid among others, is an oral administered medication used to treat a number of cancers (e.g., multiple myeloma), graft-versus-host disease, and many skin disorders (e.g., complications of leprosy such as skin lesions). Thalidomide has been used to treat conditions associated with HIV: aphthous ulcers, HIV-associated wasting syndrome, diarrhea, and Kaposi's sarcoma, but increases in HIV viral load have been reported.

SOS is a Morse code distress signal (), used internationally, originally established for maritime use. In formal notation SOS is written with an overscore line (), to indicate that the Morse code equivalents for the individual letters of "SOS" are transmitted as an unbroken sequence of three dots / three dashes / three dots, with no spaces between the letters. In International Morse Code three dots form the letter "S" and three dashes make the letter "O", so "S O S" became a common way to remember the order of the dots and dashes. IWB, VZE, 3B, and V7 form equivalent sequences, but t

piece of laboratory equipment that produces a single open gas flame

shallow dish on which biological cultures may be grown and/or viewed

internal combustion engine using an eccentric rotary design in place of pistons

Tramadol, sold under the brand name Tramal among others, is an opioid pain medication and a serotonin–norepinephrine reuptake inhibitor (SNRI) used to treat moderate to severe pain. When taken by mouth in an immediate-release formulation, the onset of pain relief usually begins within an hour. It is also available by injection. It is available in combination with paracetamol (acetaminophen).

trade name of a cyanide-based pesticide

pocket-sized card with embedded integrated circuits for security-related functions

Oxycodone, sold under the brand names Endone and OxyContin (which is the extended-release form) among others, is a semi-synthetic opioid used medically for the treatment of moderate to severe pain. It is a highly addictive and commonly abused drug. It is usually taken orally, and is available in immediate-release and controlled-release formulations. Onset of pain relief typically begins within fifteen minutes and lasts for up to six hours with the immediate-release formulation. In the United Kingdom, it is available by injection. Combination products are also available with paracetamol (acetam

antique electrical device which stores a high-voltage electric charge

transparent thermoplastic, commonly called acrylic

flat-bottomed, conical laboratory glassware

thumb|Pilates reformer machine Pilates ( , ) is a type of mind–body exercise that encompasses the original discipline created by Joseph Pilates and the modifications to it that have arisen over the years. As of 2023, over 12 million people practice Pilates.

pistol cartridge with cal. 9 mm designed by Georg Luger in 1901, standard ammunition for a significant part of pistols on the market today (2023)

special calendar used to count the days of Advent in anticipation of Christmas

explosive chemical compound

office tool for making uniform holes in paper

hand tool used in soldering

type of electron microscope used for looking at atoms

handheld power tool

vehicle widely regarded as the first automobile