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Lochan Saorach

Lochan Saorach 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 Lochan Saorach rather than just read about it. In short: Lochan Saorach or Lochan Dùn Saoraich (NN451272) is a small loch situated in Glen Dochart (Scottish Gaelic: Gleann Dochard), below Dun Saorach, Perthshire, Scottish Highlands, Scotland. The glen extends from Crianlarich eastwards to Killin with the River Dochart passing through it.

Lochan Saorach — main illustration
Lochan Saorach — illustration

Key takeaways

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

Reference excerpt

Lochan Saorach or Lochan Dùn Saoraich (NN451272) is a small loch situated in Glen Dochart (Scottish Gaelic: Gleann Dochard), below Dun Saorach, Perthshire, Scottish Highlands, Scotland. The glen extends from Crianlarich eastwards to Killin with the River Dochart passing through it. The Saorach lochan is a natural feature, roughly oval in shape, sitting across the River Dochart from the old farm of Auchessan and is notable for at one time having a floating island on it waters as recorded in 1769 in addition to a normal island.

History

In 1769 the antiquarian Thomas Pennant, whilst on his first tour of Scotland, recorded that "...opposite to the farm of Achessan (sic), is a lake, noted for a floting island, fifty-one feet long, and twenty-nine broad, that shifts its quarters with the wind. It has strength sufficient to carry an involuntary voyage, the cattle that might be surprised feeding on this mobile solum, deceived with the appearance of its being firm land. it cannot indeed boast of carrying on its surface the darksome groves of those on the Cutilian waters, but, like the Lydian Calamina, may be launched from the sides of the lake with poles, and can show plenty of coarse grass, some small willows, and a little birch tree."

He goes on to record as a foot note that "The thickness of this isle is twenty-five inches. Perhaps, as Mr.Gahn affirms to be the case of other floating islands, this might have originated from the twisted roots of the Schoenus mariscus, and Scirpus caespitosus, converted into a more firm mass by the addition of the Carex caespitosus." Schoenus mariscus is now known as swamp sawgrass (Cladium mariscus), Scirpus caespitosus is now deer grass (Trichophorum cespitosum) and Carex caespitosus is Carex cespitosa. Auchessan Farm is recorded from at least the mid 18th century and is still occupied.

Floating islands Floating islands are also known as tussocks, floatons, or suds and are composed of exposed vegetation that grows on a buoyant base of plant roots and other organic materials. In 1745 Herman Moll recorded on his map of Loch Lomond that it was famous for its floating island. The artist George Washington Wilson (1823 - 1893) photographed the remains of a floating island in the Luss Straits at an unknown date. Richard Franck, a Cromwellian soldier was stationed at or visited Loch Ness during the 17th century and wrote that "The famous Lough-Ness, so much discours'd for the supposed floating island; for here it is, if anywhere in Scotland. Nor is it any other than a natural plantation of segs and bullrushes, matted and knit so close together by natural industry, and navigated by winds that blow every way, floats from one part of the Lough to another, upon the surface of the solid deeps of this small Mediterrane." Floating islands have been put forward as an explanation for sightings of the Loch Ness Monster.

The Lochan The lochan is now located within a forestry pine plantation with one island still present however the floating island is no longer extant.

References

Illustrations

Lochan Saorach illustration
Lochan Saorach: Lake Blanchemer, France - A floating island
Lake Blanchemer, France - A floating island

Worked examples

Example 1 — a first encounter with Lochan Saorach

Start with the simplest possible case. Write down what Lochan Saorach 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 Lochan Saorach 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 Lochan Saorach 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 Lochan Saorach

In research
Lochan Saorach 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 Lochan Saorach 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
Lochan Saorach is common in secondary-school and first-year university syllabi. It links to neighbouring topics Freshwater lochs of Scotland, Glens of Scotland, Lochs of Stirling (council area), so understanding it makes those chapters shorter.
In everyday life
Look for Lochan Saorach 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 Lochan Saorach in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Lochan Saorach means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Lochan Saorach out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lochan Saorach in simple terms?

Lochan Saorach or Lochan Dùn Saoraich (NN451272) is a small loch situated in Glen Dochart (Scottish Gaelic: Gleann Dochard), below Dun Saorach, Perthshire, Scottish Highlands, Scotland. The glen extends from Crianlarich eastwards to Killin with the River Dochart passing through it.

Why does Lochan Saorach 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 Lochan Saorach?

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 Lochan Saorach.

Tags

  • Freshwater lochs of Scotland
  • Glens of Scotland
  • Lochs of Stirling (council area)
  • Valleys of Stirling (council area)

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