science

Telethon

Telethon 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 Telethon rather than just read about it. In short: A telethon (a portmanteau of "television" and "marathon") is a televised fundraising event that lasts many hours or days, the purpose of which is to raise money for a charitable, political or other cause. Most telethons feature heavy solicitations for pledges (promises to donate funds at a later time) by masters of ceremonies or hosts, who are often local celebrities or media personalities combined with variety show…

Key takeaways

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

Reference excerpt

A telethon (a portmanteau of "television" and "marathon") is a televised fundraising event that lasts many hours or days, the purpose of which is to raise money for a charitable, political or other cause. Most telethons feature heavy solicitations for pledges (promises to donate funds at a later time) by masters of ceremonies or hosts, who are often local celebrities or media personalities combined with variety show style entertainment such as singers, bands and instrumentalists. In some cases, telethons feature content related to the cause being supported, such as interviews with charitable beneficiaries, tours of charity-supported projects, or pre-taped sequences. The equivalent term for a radio broadcast is a radiothon; most radiothons do not include live entertainment. In the United States, the first telethon used for political outreach occurred in 1960. The highest donating telethon per capita in the world is the Channel Seven Perth Telethon in Perth, Western Australia. It has raised over AU$750 million since 1968, and raised AU$90.1 million in 2025. The most watched and well-regarded Telethon in the world is Teletón Chile in the nation of Chile. Since its beginning in 1978, it has raised almost CL$300 billion (US$286 million) from the citizens of the nation and international viewers in all parts of the world, and raised US$50.4 million in 2024.

History

United States On April 9, 1949, Milton Berle hosted the first-ever telethon, raising $1,100,000 for the Damon Runyon Cancer Research Foundation over the course of 16 hours. The first published appearance of the word "telethon" was in the prior day's newspapers. One of the first continuing annual telethons in the United States was the United Cerebral Palsy (UCP) telethon. Television executive Leonard Goldenson and his wife had a daughter with cerebral palsy, and with the help of other affected parents, launched the UCP Telethon in 1950, with early television personality Dennis James as host. He continued to host New York-based segments on the telethon through the 1980s. The telethon is now defunct, as UCP raises funds through other means, including its website. By 1955 televised telethons had become a familiar enough part of American culture to be parodied that year in the film noir Tight Spot as comic relief. The oldest continuing annual telethon in the United States on the same channel is Green Bay, Wisconsin, station WBAY-TV (channel 2)'s local Cerebral Palsy telethon, which helps provide financial support for equipment for Cerebral Palsy, Inc., that began broadcasting as a 22-hour event on the first weekend of March 1954. As of 2025, WBAY has presented the telethon for 71 years. Close behind the Green Bay telethon in longevity is the WHAS Crusade for Children in Louisville, Kentucky, which began in October 1954 on WHAS-TV (channel 11) and WHAS radio (840 AM). It is still broadcast on the two WHAS stations despite their being owned by different entities for three decades, and has expanded to radio and TV stations in other parts of Kentucky and Indiana, as well as a live stream on the internet. The Crusade is famous for the legions of firefighters who collect money at intersections throughout the area each May and June. The most-broadcast telethon to date was January 22, 2010, Hope for Haiti Now telethon, to aid the victims of the January 10th earthquake. Viewers were able to text donations on cell phones, and it raised a reported $58 million by the next day. It was designed to show viewers a stark divide between them and the people surviving this catastrophic event.

Australia Melbourne's Good Friday Appeal, which began in 1931, started its telethon in 1957 after the Seven Network joined as a sponsor. Adelaide's first telethon was held at the Tynte Street, North Adelaide, studios of NWS9 in December 1960. One fundraiser was Barry Jones, then famous as a quiz champion. Viewers could, for a fee, attempt to "stump" him with their favorite question. Prior to the establishment of their annual telethon in 1968, Perth station TVW broadcast one-off telethons for bushfire relief in 1961, and to raise funds for Christmas care packages sent to Western Australian soldiers serving in Vietnam in 1966 and 1967.

Examples

The Americas

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Telethon

Start with the simplest possible case. Write down what Telethon 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 Telethon 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 Telethon 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 Telethon

In research: Telethon 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 Telethon 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: Telethon is common in secondary-school and first-year university syllabi. It links to neighbouring topics Charity events, Telethons, Television terminology, so understanding it makes those chapters shorter.
In everyday life: Look for Telethon 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.

Affiliate

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

How to study Telethon in 20 minutes

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

Frequently asked questions

What is Telethon in simple terms?

Why does Telethon 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 Telethon?

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 Telethon.