astronomy

Sinag

Sinag is a astronomy 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 Sinag rather than just read about it. In short: Sinag (stylized in all caps; Filipino for 'sun ray'), based in De La Salle University in the Philippines, is the first Philippine solar-powered race car and the first entry of the Philippines to the World Solar Challenge. Background and design The design and construction of Sinag undertaken by a group of and students from the mechanical engineering and electronic engineering department of the De La Salle University…

Key takeaways

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

Reference excerpt

Sinag (stylized in all caps; Filipino for 'sun ray'), based in De La Salle University in the Philippines, is the first Philippine solar-powered race car and the first entry of the Philippines to the World Solar Challenge.

Background and design The design and construction of Sinag undertaken by a group of and students from the mechanical engineering and electronic engineering department of the De La Salle University in Manila backed by various corporate sponsors. Robert Obiles is the overall team leader and Rene Fernandez is the overall technical project leader. Other members include Jack Catalan, Isidro Marfori, Emmanuel Gonzales, Noriel Mallari, Ivan Porcalla, Sherwin To, Prince Ang, Mico Villena, Martin Sy-Quia, Vincent Yao, Kaiser Fernandez, Walter Chua, and Eric Tan. The Sinag is a solar car which cost ₱9 million to make. is a three-wheeled single-seater vehicle made of carbon fiber with its bottom part having foam core material. The top view of Sinag is 4,799.25 by 1,748.48 millimeters (188.95 in × 68.84 in) While the height of the vehicle is 1,132.05 millimeters (44.569 in). The wheelbase is 1,700.54 millimeters (66.950 in). It weighs 290 kg (640 lb). Sinag is powered by its 403-cells 6 square meters (65 sq ft) solar array and it is equipped by a 5.9 kWh lithium-ion battery.

Operational history

Sinag was built and designed in less than a year for the 2007 edition of the World Solar Challenge, a race in Australia for solar-powered cars. It is the Philippines' debut in the race which was first held in 1987. Sinag was earlier launched on January 27, 2007, at NBC Tent, Fort Bonifacio, Taguig. The country represented by Team Sinag operating Sinag finished 12th place from 40 participants. The event was a 3,000 km (1,900 mi) race. Sinag with lead driver Eric Tan started in Darwin on October 21, reached Alice Springs on October 24, and finished the race in Adelaide on October 27. However there's a slightly conflicting information, with records showing the team covered a distance of the 2,691 km (1,672 mi) and finished 12th.

Successors Sinag was succeeded by at least three more models, namely Sikat I in 2009, Sikat II in 2011, and Sikat II-A in 2013.

References

External links Official website (Archived)

Illustrations

Worked examples

Example 1 — a first encounter with Sinag

Start with the simplest possible case. Write down what Sinag claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Sinag 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 Sinag 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 Sinag

In research: Sinag appears in astronomy 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 Sinag 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: Sinag is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2007 introductions, Cars of the Philippines, De La Salle University, so understanding it makes those chapters shorter.
In everyday life: Look for Sinag 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 Sinag in 20 minutes

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

Frequently asked questions

What is Sinag in simple terms?

Why does Sinag matter?

Because it connects several astronomy 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 Sinag?

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 Sinag.