science

Timed comments

Timed comments 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 Timed comments rather than just read about it. In short: Timed comments are a feature offered by some audio and video players and websites where people can add comments associated with specific times in an audio or video. These comments are then displayed in the player when that time is reached while playing the audio or video.

Key takeaways

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

Reference excerpt

Timed comments are a feature offered by some audio and video players and websites where people can add comments associated with specific times in an audio or video. These comments are then displayed in the player when that time is reached while playing the audio or video. Timed comments differ from annotations, captions, and subtitles in an important respect: they can be added by viewers, not just video creators, and they include the identity of the person adding the comment.

Examples SoundCloud, an audio distribution platform and music sharing website: Timed comments can be added at a specific minute and second mark in a soundtrack, and are displayed when the track reaches that minute and second mark. Users can see each other's comments. Viki, a video streaming website that hosts a number of television shows and movies from Korea, Japan, China, and Taiwan. Viki's timed commenting system is one of its distinguishing features. Viddler, a video platform used for training videos.

References

Worked examples

Example 1 — a first encounter with Timed comments

Start with the simplest possible case. Write down what Timed comments 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 Timed comments 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 Timed comments 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 Timed comments

In research: Timed comments 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 Timed comments 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: Timed comments is common in secondary-school and first-year university syllabi. It links to neighbouring topics Streaming media systems, so understanding it makes those chapters shorter.
In everyday life: Look for Timed comments 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 Timed comments in 20 minutes

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

Frequently asked questions

What is Timed comments in simple terms?

Why does Timed comments 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 Timed comments?

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 Timed comments.