science

Phoenicids

Phoenicids 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 Phoenicids rather than just read about it. In short: The Phoenicids are a minor meteor shower, first noticed by observers in New Zealand, Australia, the Indian Ocean, and South Africa during an outburst of approximately 100 meteors an hour that occurred during December 1956. Like other meteor showers, the Phoenicids get their name from the location of their radiant, which is in the constellation Phoenix.

Key takeaways

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

Reference excerpt

The Phoenicids are a minor meteor shower, first noticed by observers in New Zealand, Australia, the Indian Ocean, and South Africa during an outburst of approximately 100 meteors an hour that occurred during December 1956. Like other meteor showers, the Phoenicids get their name from the location of their radiant, which is in the constellation Phoenix. They are active from 29 November to 9 December, with a peak occurring around 5/6 December each year, and are best seen from the Southern Hemisphere. The Phoenicids appear to be associated with a stream of material from the disintegrating comet 289P/Blanpain (D/1819 W1) with a 5-year orbital period. It next comes to perihelion in 2025. Using the formula V ∞ = V g 2 + ( 11.2 k m / s ) 2 {\displaystyle V_{\infty }={\sqrt {V_{g}^{2}+(11.2\ \mathrm {km/s} )^{2}}}} , the Phoenicids (#254) have an atmospheric entry velocity of about 14.3 km/s and a geocentric velocity (before the influence of Earth's gravity) of 8.9 km/s. A very minor meteor shower with a radiant in Phoenix also occurs in July—this shower is referred to as the July Phoenicids.

References

Illustrations

Worked examples

Example 1 — a first encounter with Phoenicids

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

In research: Phoenicids 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 Phoenicids 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: Phoenicids is common in secondary-school and first-year university syllabi. It links to neighbouring topics December, July, Meteor showers, so understanding it makes those chapters shorter.
In everyday life: Look for Phoenicids 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 Phoenicids in 20 minutes

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

Frequently asked questions

What is Phoenicids in simple terms?

Why does Phoenicids 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 Phoenicids?

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 Phoenicids.