science

Sex machine

Sex machine is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sex machine rather than just read about it. In short: A sex machine is a mechanical device used to simulate human sexual intercourse or other sexual activity. Devices can be penetrative or extractive.

Key takeaways

Sex machine belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sex machine to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sex machine from memory before moving on to harder problems.

Reference excerpt

A sex machine is a mechanical device used to simulate human sexual intercourse or other sexual activity. Devices can be penetrative or extractive. The term fucking machine is generally used to describe a penetrative machine that works by the transfer of rotational or reciprocating force from a motor to a directional motion on a shaft tipped by a dildo. A hand-held modified reciprocating saw device is sometimes called a fucksaw, a hand-held modified drill motor rotating device is sometimes called a drilldo, and a modified jigsaw is called a jillsaw. An extractive device works like a milking machine and can be attached to the penis, breast, or other body parts.

History and use

Built in 1900, the first known sex machine was a self-operated device that sprayed milk into the vagina to simulate ejaculation. The vibrator was originally invented for the treatment of hysteria in Victorian women through medical orgasm induced by clitoral massage. These early mechanical devices were much larger and more powerful than modern vibrators; they were first used by physicians and became popular in bath houses in Europe and the US toward the beginning of the 20th century. More compact, electrically powered versions later briefly appeared as health aids in department store catalogs. Among recent developments in teledildonics are app-controlled thrusting machines designed for remote use, produced by manufacturers such as Lovense. Modern automated erotic stimulation devices differ from vibrators because they penetrate as well as throb. These devices are sometimes used as part of autoerotic or partnered bondage play. Teledildonics combines the use of various sex machines and a web interface, controlled remotely by a partner. Modern sex machines on the market include vacuum pumps, instruments that deliver calibrated electrical shocks to the nipples and genitals, and life-size inflatable male and female dolls with penetrable and vibrating orifices. The conference Arse Elektronika regularly features demonstrations of sex machines and academic debates about these devices.

Risk of injury In 2009, a woman from Maryland required a medical evacuation after the blade of a homemade sex machine based on a saber saw cut through the plastic dildo and caused severe vaginal injuries.

Examples Fuckzilla (by kink.com): a sex machine featuring a dildo and a licking device (2007) Nekropneum Fuckenbrust Neckhammer 40k: a sex machine by the group monochrom that was featured at NRW-Forum Düsseldorf in March 2019

In popular culture In Episode 2/20 of Boston Legal, "Chitty Chitty Bang Bang," Shirley Schmitt represents a client whose Victorian erotica collection includes a "hysteria machine" (a steam-powered, piston-operated dildo) used by Victorian doctors to help women deal with their sexual needs during the Victorian Age. In the 2008 film Burn After Reading, US Treasury agent Harry Pfarrer builds a pedal-powered "dildo chair". The pornographic website Fucking Machines has been featured in the mainstream press as a source of information and depictions of uses. In 2011, J. Michael Bailey provided a forum for a live demonstration of a sex machine device to his class at Northwestern University, which led to international press coverage, questions about appropriate college coursework, and questions about academic freedom vis-a-vis tenure.

Illustrations

Worked examples

Example 1 — a first encounter with Sex machine

Start with the simplest possible case. Write down what Sex machine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sex machine before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sex machine ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sex machine

In research: Sex machine appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sex machine in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sex machine is common in secondary-school and first-year university syllabi. It links to neighbouring topics BDSM equipment, Machine sex, Masturbation, so understanding it makes those chapters shorter.
In everyday life: Look for Sex machine outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sex machine in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sex machine means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sex machine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sex machine in simple terms?

A sex machine is a mechanical device used to simulate human sexual intercourse or other sexual activity. Devices can be penetrative or extractive.

Why does Sex machine matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sex machine?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sex machine.