engineering

Magere Brug

Magere Brug is a engineering 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 Magere Brug rather than just read about it. In short: The Magere Brug (English: Skinny Bridge) is a bridge over the river Amstel in Amsterdam, Netherlands. It connects the banks of the river at Kerkstraat, between the Keizersgracht and Prinsengracht.

Key takeaways

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

Reference excerpt

The Magere Brug (English: Skinny Bridge) is a bridge over the river Amstel in Amsterdam, Netherlands. It connects the banks of the river at Kerkstraat, between the Keizersgracht and Prinsengracht. The central section of the Magere Brug is a bascule bridge made of white-painted wood. The present bridge was built in 1934. The first bridge at this site was built in 1691 as Kerkstraatbrug and had 13 arches. Because this bridge was very narrow, the locals called it magere brug, which literally means "skinny bridge". In 1871 the state of the bridge had deteriorated so much, it was demolished and replaced by a nine-arched wooden bridge. Half a century later, this bridge also needed to be replaced. Architect Piet Kramer made several designs for a steel and stone bridge, but the city decided to replace it with a new bridge that looked the same as the previous, only slightly bigger. In 1934, that bridge was demolished, and replaced by a redesign made by Piet Kramer. The last major renovation was in 1969. Until 1994, the bridge was opened by hand, but is now operated automatically. Use of the bridge has been limited to pedestrians and cyclists since 2003. The centre-part is opened many times, daily, in order to let river traffic pass. The sightseeing tour boats are low enough to pass underneath the bridge when closed. The bridge is decorated with 1,200 light bulbs which are turned on in the evening. A story told to tourists about the origins of the 1691 version of the bridge is that it was built by two sisters who lived on opposite sides of the Amstel river and wanted to be able to visit one another, every day. In one variant of the story, the sisters were not able to afford a bridge of adequate width or height for general use, so a very narrow bridge was built, hence its name. In another variant, the sisters' last name was Mager (skinny), which gave name to the bridge (rather than its narrowness). Recent research of city archives revealed the name has its origin in the fact that originally a broad and monumental stone bridge was planned during Amsterdam's prosperous Golden Age, but the 1672 economic setback forced the city council to drastically scale back the plans, and build a basic and simple structure instead. Locals regard the bridge as the most romantic of all in Amsterdam. It is a common site for proposals and lovers' strolls. Additionally, legend says that a kiss between lovers while on this bridge (or passing beneath by boat) ensures that they will be in love forever. The bridge can be seen in a number of films, including the 1971 James Bond film Diamonds Are Forever, in which the legend of the bridge's being built is told by a boat tour guide.

References

External links Media related to Brug 242, Magere Brug at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Magere Brug

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

In research: Magere Brug appears in engineering 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 Magere Brug 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: Magere Brug is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1691 establishments in the Dutch Republic, Bascule bridges in the Netherlands, Bridges completed in the 17th century, so understanding it makes those chapters shorter.
In everyday life: Look for Magere Brug 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 Magere Brug in 20 minutes

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

Frequently asked questions

What is Magere Brug in simple terms?

The Magere Brug (English: Skinny Bridge) is a bridge over the river Amstel in Amsterdam, Netherlands. It connects the banks of the river at Kerkstraat, between the Keizersgracht and Prinsengracht.

Why does Magere Brug matter?

Because it connects several engineering 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 Magere Brug?

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 Magere Brug.