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Videosphere

Videosphere 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 Videosphere rather than just read about it. In short: The Videosphere is a JVC CRT television that was shaped in the form of a space helmet. It was first introduced in 1970 and was sold up until the early 1980s.

Videosphere — main illustration
Videosphere — illustration

Key takeaways

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

Reference excerpt

The Videosphere is a JVC CRT television that was shaped in the form of a space helmet. It was first introduced in 1970 and was sold up until the early 1980s. It was popular for its modern design; the alarm clock base was an option, most units have a plain base. Videospheres were produced in large quantities in white, red, black, orange and grey. Videospheres may come in a variety of different colors, but their screen remains in a simple black and white, with dials to adjust volume, brightness, and contrast. To operate the television, there is a main dial at the top of the sphere for channel selection. Color televisions were being produced at this time, but they were costly. Therefore, the Videosphere screen most likely did not come in color because making a television that small would have been too expensive. The television screen is a rectangular shape, despite being encased in a circular shell. The Videosphere also has a chain handle on its top, allowing it to come off its stand and be hung from a wall or ceiling to be seen from anywhere in a room. One reason the television was so innovative was that it was designed to be portable. All Videospheres came with a battery pack that is rechargeable and allows it to be played outside of a traditional home setting. Videospheres could also be powered from a vehicle's cigarette lighter. The design of the Videosphere is said to have been inspired by the film 2001: A Space Odyssey, though its shape in itself remains as one of the most iconic examples of the early 1970s design ethos. The Videosphere was also said to be influenced by the Moon landing in 1969. After this took place, American culture shifted greatly to all things space themed. The sci-fi look of the TV saw a red model appear as a background prop in the 1999 film The Matrix, though they have appeared in sci-fi films since the early 70s. Soylent Green had a red model on screen as a prop. In the 1972 film Conquest of the Planet of the Apes, a black Videosphere was shown with a color-capable tube and a slot that allowed a cassette tape capable of playing video. Humorously, the color image on the Videosphere goes from being rectangular in one scene to round in another scene.

Later history Today, Videospheres can still be purchased, although they stopped being manufactured in the early 1980s. They are tricky to find, and sell for a price of about US$1000. While finding one may be a challenge, getting it up and running is also not an easy task, as parts to fix and replace on it are scarce. With spare parts becoming an issue for restorers of Videospheres, it is not uncommon to see spare parts sold on online auctions. Replacement visor screens are particularly sought after. If one is found in operating condition, Videospheres can still be used. While operating a Videosphere is still possible because interfaces such as HDMI were not invented when they were at the height of their usage, a converter box that gives the desired inputs would also need to be purchased. Video artist Nam June Paik used a white videosphere for his installation TV Buddha in 1974.

References

Illustrations

Videosphere: JVC Videosphere displayed at the Geffrye Museum.
JVC Videosphere displayed at the Geffrye Museum.
Videosphere: Top of the Videosphere showing the chain handle and channel dial.
Top of the Videosphere showing the chain handle and channel dial.

Worked examples

Example 1 — a first encounter with Videosphere

Start with the simplest possible case. Write down what Videosphere 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 Videosphere 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 Videosphere 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 Videosphere

In research
Videosphere 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 Videosphere 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
Videosphere is common in secondary-school and first-year university syllabi. It links to neighbouring topics JVCKenwood, Products introduced in 1970, Television sets, so understanding it makes those chapters shorter.
In everyday life
Look for Videosphere 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 Videosphere in 20 minutes

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

Frequently asked questions

What is Videosphere in simple terms?

The Videosphere is a JVC CRT television that was shaped in the form of a space helmet. It was first introduced in 1970 and was sold up until the early 1980s.

Why does Videosphere 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 Videosphere?

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 Videosphere.

Tags

  • JVCKenwood
  • Products introduced in 1970
  • Television sets

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