physics

Nuclear Power? No Thanks

Nuclear Power? No Thanks is a physics 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 Nuclear Power? No Thanks rather than just read about it. In short: The Nuclear Power? No Thanks logo (Danish: Atomkraft?

Key takeaways

Nuclear Power? No Thanks belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Nuclear Power? No Thanks to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Nuclear Power? No Thanks from memory before moving on to harder problems.

Reference excerpt

The Nuclear Power? No Thanks logo (Danish: Atomkraft? Nej tak), also known as the Smiling Sun, is an international symbol of the anti-nuclear movement. The logo has been present worldwide since the late 1970s and the 1980s. BBC News reported in 2005 that few symbols had become "as instantly recognizable across the world", and even the nuclear power industry had recognized the logo's "power and success". Over 20 million Smiling Sun badges have been produced in over 60 languages, such as Danish, Korean, Swedish, English, Arabic, Hebrew, Norwegian, and Russian. In recent years the logo has been playing a prominent role once again to raise awareness and funding for anti-nuclear groups, especially in Germany, Austria and Switzerland where opposition is growing to plans for extending the operation of old nuclear reactors and constructing new ones.

Design history

The Smiling Sun logo was designed in 1975 by, then 21-year-old Danish activist and designer Anne Lund, who was part of the Danish Organisationen til Oplysning om Atomkraft (OOA; English: Organization for Information on Nuclear Power). At the time of creating the logo she had no prior design experience. The logo was trademarked in 1977. By posing the question: "Nuclear Power?" and providing a concise answer, "No Thanks", the logo was intended to express polite dissent and—by questioning nuclear power—to stimulate dialogue. The house where Lund designed the original symbol can still be seen in Klostergade 6-8, Aarhus, Denmark. After the Fukushima disaster in 2011, a new version was released for renewable energy, with the statement "Renewable Energy Yes Please!" (Danish: Vedvarende Energi Ja Tak!) on a green background with a yellow sun. The original logo has been translated into over 60 different languages.

Mural in Aarhus, Denmark

In 1983, a mural of the Smiling Sun was painted near the crossing of Vestergade and Emil Vetts Passage in Aarhus, near the location where it was originally designed by Lund. However, in 2008, it was almost destroyed because of real estate developments in the area, but protests by its admirers succeeded in keeping it intact. More recently, it was restored.

Trademark The Smiling Sun logo is an internationally registered trademark. The purpose of the trademark is to protect the logo against alteration and prevent use by commercial and partisan political interests. Anti-nuclear groups may apply for user rights to the OOA Fund in Denmark. The Italian political parties Federation of Green Lists, Federation of the Greens and Green Europe have licensed use of the symbol for their party electoral materials and logos. The Green Party Taiwan and the Maltese Democratic Alternative used the smiling sun symbol in the past too. It is also used by the Alternative Ecologists, United Left/The Greens–Assembly for Andalusia and Initiative for Catalonia Greens. A variation is used by Ökologische Linke.

Nuclear Power? Yes Please A network of pro-nuclear physicists, software developers, and environmental activists drew inspiration from the original anti-nuclear logo, but viewed nuclear power as part of a sustainable and environmentally-friendly energy option into the 21st century, and devised a similar image—with a pro-nuclear connotation—as part of an ongoing effort that originated in 2008. Some commentators in support of the "Nuclear Power? Yes Please" movement have made arguments that nuclear power should be regulated and safely conducted, but not outright banned, with George Monbiot arguing in 2016 that "the overwhelming priority for those who make decisions about energy must be to avert climate breakdown. They need to keep the lights on, but not by sacrificing the future welfare of humanity and Earth’s living systems. It is better to light a candle than to curse the darkness. It is also better to curse the darkness than to burn your house down." Additional pro-nuclear environmentalist commentators have supported the "Nuclear Power? Yes Please" messaging as "part of a comprehensive post-carbon energy" system.

Gallery

See also Nuclear power proposed as renewable energy Renewable energy debate

References

External links Official website "About OOA (Organization for Information on Nuclear Power)". OOA.dk. Archived from the original on 27 February 2021.

Illustrations

English version of the logo

Worked examples

Example 1 — a first encounter with Nuclear Power? No Thanks

Start with the simplest possible case. Write down what Nuclear Power? No Thanks claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Nuclear Power? No Thanks 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 Nuclear Power? No Thanks 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 Nuclear Power? No Thanks

In research: Nuclear Power? No Thanks appears in physics 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 Nuclear Power? No Thanks 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: Nuclear Power? No Thanks is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1975 establishments in Denmark, Anti-nuclear movement, Danish inventions, so understanding it makes those chapters shorter.
In everyday life: Look for Nuclear Power? No Thanks 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 Nuclear Power? No Thanks in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nuclear Power? No Thanks 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 Nuclear Power? No Thanks out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nuclear Power? No Thanks in simple terms?

The Nuclear Power? No Thanks logo (Danish: Atomkraft?

Why does Nuclear Power? No Thanks matter?

Because it connects several physics 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 Nuclear Power? No Thanks?

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 Nuclear Power? No Thanks.