American inventions

thumb|A twisted-pair cable as commonly used for Ethernet thumb|100px|Symbol used by Apple Inc.|Apple and [[Google on some devices to denote an Ethernet connection]] thumb|100px|Symbol recommended by Microsoft as part of the [[PC System Design Guide to denote an Ethernet connection]]

network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules

cooling of air in buildings or vehicles

economics-themed board game

thumb|Acoustic coupler modems used a telephone handset as the audio medium, with the user dialing the desired number and then pressing the handset into the modem to complete the connection. These systems generally operated at a speed of 300 bits per second.

electrical device that converts the energy of light directly into electricity by the photovoltaic effect

thumb|Escalator in a Centrum Nauki Kopernik metro station|metro station in [[Warsaw]] thumb|Rows of escalators at the World Trade Center in Dubai thumb|thumbtime=3|Fujitec escalator in action, 2020 thumb|Escalator maintenance test run thumb|upright|Escalators at the Christ the Redeemer (statue)|Christ the Redeemer statue in [[Rio de Janeiro, Brazil]]

user interface allowing interaction through graphical icons and visual indicators

thumb|A typical modern component turntable, showing the curved tonearm with a headshell at the end, under which lies the magnetic cartridge and its attached stylus touching down on the grooves of a black record placed on the turntable's platter

display that uses the light-modulating properties of liquid crystals

technique based on carbon-14 decay to determine the age of organic materials

thumb|upright=1.1|A Smith & Wesson Model 10, the most common revolver design thumb|upright=1.1|Firing a Smith & Wesson Model 686 [[.357 Magnum]]

thumb|Riding a skateboard A skateboard is a type of sports equipment used for skateboarding. It is usually made of a specially designed 7–8-ply maple plywood deck and has polyurethane wheels attached to the underside by a pair of skateboarding trucks.

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.]]

in vitro method for producing large amounts of specific DNA or RNA fragments from small amounts of short oligonucleotide primers

thumb|Visual abstraction of several documents being connected by hyperlinks

camera that captures photographs or video in digital format

In computing, BIOS (, ; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is a type of firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). On a computer using BIOS firmware, the firmware comes pre-installed on the computer's motherboard.

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|upright=1.35|North American F-100 Super Sabre dropping napalm in a training exercise

form of directional radio antenna used in radio astronomy

A dishwasher is a machine that is used to clean dishware, cookware, and cutlery automatically. Unlike manual dishwashing, which relies on physical scrubbing to remove soiling, the mechanical dishwasher cleans by spraying hot water, typically between , at the dishes, with lower temperatures of water used for delicate items.

A spreadsheet is a computer application for computation, organization, analysis and storage of data in tabular form. Spreadsheets were developed as computerized analogs of paper accounting worksheets. The program operates on data entered in cells of a table. Each cell may contain either numeric or text data, or the results of formulas that automatically calculate and display a value based on the contents of other cells. The term spreadsheet may also refer to one such electronic document.

deprecated multimedia platform used to add animation and interactivity to web pages

payment card connected directly to a cardholder’s bank account

computer language for annotating documents

programming language developed by Google and the open-source community

thumb|Office stapler thumb|A spring-loaded stapler

thumb|300px|A large bulldozer with multi-shank ripper, the Caterpillar D9

thumb|upright=1.35|ARPANET access points in the 1970s

type of steel fencing wire constructed with sharp edges or points arranged at intervals along the strand(s)

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

instrument in outer space for observing distant space objects

thumb|The boot screen and command-line interface of MS-DOS 6, with an example of its directory structure thumb|The boot screen and command-line interface of FreeDOS, showing version information and an example of its directory structure

thumb|right|A laptop computer keyboard using the QWERTY layout thumb|right|The BlackBerry, which popularized the use of QWERTY keyboards on [[smartphones in the late-2000s]]

thumb|The growth rings of a tree at Bristol Zoo, [[England. Each ring represents one year; the outside rings, near the bark, are the youngest]] thumb|A "tree cookie" cross-section of a Pseudotsuga menziesii var. menziesii|Coast Douglas-fir tree displayed in the [[Royal Ontario Museum. The tree was over 500 years old when it was cut down in British Columbia in the 1890s. The markings indicating historical events were added in the 1920s.]] Dendrochronology (or tree-ring dating) is the scientific method of dating tree rings (also called growth rings) to the exact year they were formed in a tree.

thumb|A Xerox digital photocopier in 2010 A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply. Most modern photocopiers use a technology called xerography, a dry process that uses electrostatic charges on a light-sensitive photoreceptor to first attract and then transfer toner particles (a powder) onto paper in the form of an image. The toner is then fused onto the paper using heat, pressure, or a combination of both. Copiers can a

execution method

right|thumb|Possible elements of a video game joystick: 1. stick, 2. base, 3. trigger, 4. extra buttons, 5. autofire switch, 6. throttle, 7. #Hat switch|hat switch (POV hat), 8. suction cups.

type of clock used to wake up a sleeping person at a certain time

thumb|Example of a court card, postmarked 1899, showing Robert Burns and his cottage and monument in [[Ayr]] alt=Postcard depicting people boarding a train at the Shawnee Depot in Colorado, late 1800s.|thumb|Postcard depicting people boarding a train at the Shawnee Depot in Colorado, late 1800s

digital app distribution platform for iOS/iPadOS

thumb|upright=1.35|The driver and passenger front airbag modules, after having been deployed, in a Peugeot 306

type which stores memory addresses in a computer program

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.

system of satellites that provide autonomous geo-spatial positioning with global coverage

thumb|255px|A simple flowchart representing a process for dealing with a non-functioning Light fixture|lamp

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene, and has numerous applications because it is chemically inert. The commonly known brand name of PTFE-based composition is Teflon by Chemours, a spin-off from DuPont, which originally invented the compound in 1938.

thumb|right|Windsurfing on Columbia River, [[Oregon]]

thumb|A digital thermostat thumb|right|Honeywell's "The Round" model T87 thermostat, one of which is in the collection of the [[Smithsonian.]] thumb|right|A touch screen thermostat thumb|right|An electronic thermostat in a retail store

300px|thumb|right|Lawrence's cyclotron, , showing the beam of accelerated ions (likely [[protons or deuterons) exiting the machine and ionizing the surrounding air causing a blue glow]]

amusement ride

thumb|Machete/saw combo thumb|Mexican artisan Agustín Cruz Tinoco using a machete to carve wood thumb|Mexican machete, from Guerrero, 1970. bull horn handle, hand forged blade (hammer marks visible) thumb|Campos Hermanos Mexican machete with blade 75 centimeters long and 93 total.

American robotic rover exploring Gale Crater on Mars

thumb|upright=1.2|Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against "stray light" from the sides.

rechargeable battery type

alt=C8 style on the left, tube style on the right|thumb|A set of modern LED flashlights

mask protecting from toxic molecules and particles

thumb|upright=1.35|A flying disc with the Wham-O registered trademark "Frisbee"