computer science

Sonar (mobile application)

Sonar (mobile application) is a computer 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 Sonar (mobile application) rather than just read about it. In short: Sonar was a free mobile application which showed the user how they are connected to other individuals in a room via publicly available social media profiles and location information from Foursquare, Twitter, and Facebook. Company Sonar was founded by Ocean City, Maryland, native Brett Martin, and was launched in 2011 at TechCrunch Disrupt New York.

Key takeaways

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

Reference excerpt

Sonar was a free mobile application which showed the user how they are connected to other individuals in a room via publicly available social media profiles and location information from Foursquare, Twitter, and Facebook.

Company Sonar was founded by Ocean City, Maryland, native Brett Martin, and was launched in 2011 at TechCrunch Disrupt New York. Sonar is the fourth business to come out of New York-based mobile incubator K2 Media Labs, with the previous three being Fingerprint, Tracks, and MarketSharing. Sonar has been offline as of September 2013, at which time Martin stated that he was no longer working on the project.

References

External links K2 Media Labs Website Archived 2011-07-09 at the Wayback Machine

Worked examples

Example 1 — a first encounter with Sonar (mobile application)

Start with the simplest possible case. Write down what Sonar (mobile application) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer 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 Sonar (mobile application) 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 Sonar (mobile application) 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 Sonar (mobile application)

In research: Sonar (mobile application) appears in computer 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 Sonar (mobile application) 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: Sonar (mobile application) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Android (operating system) software, Data, IOS software, so understanding it makes those chapters shorter.
In everyday life: Look for Sonar (mobile application) 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 Sonar (mobile application) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sonar (mobile application) 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 Sonar (mobile application) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sonar (mobile application) in simple terms?

Why does Sonar (mobile application) matter?

Because it connects several computer 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 Sonar (mobile application)?

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 Sonar (mobile application).