ArticleslgStudy

physics

If You Love This Planet

If You Love This Planet 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 If You Love This Planet rather than just read about it. In short: If You Love This Planet is a 1982 Canadian documentary short film directed by Terre Nash, produced by Studio D, the women's unit of the National Film Board of Canada. Plot The film is a recording of a lecture given to SUNY Plattsburgh students by Australian physician and anti-nuclear activist Dr.

If You Love This Planet — main illustration
If You Love This Planet — illustration

Key takeaways

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

Reference excerpt

If You Love This Planet is a 1982 Canadian documentary short film directed by Terre Nash, produced by Studio D, the women's unit of the National Film Board of Canada.

Plot The film is a recording of a lecture given to SUNY Plattsburgh students by Australian physician and anti-nuclear activist Dr. Helen Caldicott about the dangers posed by nuclear weapons. While Caldicott speaks about the dangers of nuclear war and what it could mean in terms of casualties, Nash cuts from the speech to black-and-white images of the bombings of Hiroshima and Nagasaki.

Production Terre Nash was a student at McGill University when she heard a lecture by Helen Caldicott. Nash decided to create her first film based on the lecture. The film was created by Studio D with a budget of $70,117 (equivalent to $209,712 in 2025). The NFB's Board of Governors stated that the film was the "hottest film since Not a Love Story". The Ministry of External Affairs opposed including Ronald Reagan in the film. Footage from Recognition of the Japanese Zero Fighter, a 1943 United States Department of War film, featuring Reagan was used in the film. The NFB opposed including the footage of Reagan, but allowed it to stay in the film after six months of debate.

Release The film was meant to be shown at the United Nations's Conference on Disarmament. It debuted in the United Kingdom when it was screened by the London Socialist Film Co-op. The Canadian Broadcasting Corporation declined to broadcast the film, "because it takes a strong position on nuclear arms and does not give a balanced and objective view of the subject", and that they could not counter the film as it would be difficult to assemble a discussion panel including supporters of nuclear war. The film was later shown on the CBC newsmagazine The Journal.

Reception On 13 January 1983, the American distributors of If You Love This Planet, Acid Rain: Requiem or Recovery, and Acid from Heaven were ordered to register as foreign agents by the United States Department of Justice citing the Foreign Agents Registration Act. The films were also ordered to be labeled as political propaganda. Barry Keene, a member of the California State Senate, filed a lawsuit against the order. In 1983, an injunction against the DOJ was issued by U.S. District Judge Raul Anthony Ramirez. In 1986, the Supreme Court of the United States agreed to hear the case; on 28 April 1987, in Meese v. Keene, it ruled five to three in favor of the DOJ. U.S. Senator Ted Kennedy hosted a screening of the film for members of the United States Senate Committee on the Judiciary. John Roberts stated that he expected a film to be banned in the Soviet Union, but not the United States. The Canadian government requested for the order to be rescinded.

Accolades If You Love This Planet was the seventh film by the NFB to receive an Academy Award. Nash thanked Reagan in her Oscar acceptance speech for the added publicity.

Legacy In 1992, Caldicott published the book, If You Love This Planet: A Plan to Heal the Earth and, from July 2008 to November 2012, hosted a weekly radio program called If You Love This Planet.

See also Eight Minutes to Midnight: A Portrait of Dr. Helen Caldicott, a 1981 feature-length documentary film. Nuclear Addiction: Dr. Rosalie Burtell on the Cost of Deterrence (Nash, 1986). A Writer in the Nuclear Age, featuring author Margaret Laurence (Nash, 1985).

References

Works cited Beard, William; White, Jerry, eds. (2002). North of Everything: English-Canadian Cinema Since 1980. The University of Alberta Press. ISBN 0-88864-398-5. Evans, Gary (1991). In the National Interest: A Chronicle of the National Film Board of Canada from 1949 to 1989. University of Toronto Press. ISBN 0802027849.

External links If You Love This Planet at IMDb Watch If You Love This Planet on the NFB website If You Love This Planet Radio Program Full film at Documentary.net

Worked examples

Example 1 — a first encounter with If You Love This Planet

Start with the simplest possible case. Write down what If You Love This Planet 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 If You Love This Planet 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 If You Love This Planet 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 If You Love This Planet

In research
If You Love This Planet 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 If You Love This Planet 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
If You Love This Planet is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1982 Canadian films, 1982 English-language films, 1982 films, so understanding it makes those chapters shorter.
In everyday life
Look for If You Love This Planet 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.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “If You Love This Planet” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study If You Love This Planet in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what If You Love This Planet 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 If You Love This Planet out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is If You Love This Planet in simple terms?

If You Love This Planet is a 1982 Canadian documentary short film directed by Terre Nash, produced by Studio D, the women's unit of the National Film Board of Canada. Plot The film is a recording of a lecture given to SUNY Plattsburgh students by Australian physician and anti-nuclear activist Dr.

Why does If You Love This Planet 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 If You Love This Planet?

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 If You Love This Planet.

Tags

  • 1982 Canadian films
  • 1982 English-language films
  • 1982 films
  • 1982 in the environment
  • 1982 short documentary films
  • Anti-nuclear films
  • Anti–nuclear weapons movement
  • Best Documentary Short Subject Academy Award winners
  • Canadian short documentary films
  • Documentary films about nuclear war and weapons
  • English-language Canadian films
  • English-language short documentary films

Keep exploring