science

John Carbutt

John Carbutt 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 John Carbutt rather than just read about it. In short: John Carbutt (December 2, 1832– July 26, 1905) was an English photographer and businessman. He created stereograms of his excursions in Minnesota, along the Mississippi River, Niagara Falls, and the Rocky Mountains.

Key takeaways

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

Reference excerpt

John Carbutt (December 2, 1832– July 26, 1905) was an English photographer and businessman. He created stereograms of his excursions in Minnesota, along the Mississippi River, Niagara Falls, and the Rocky Mountains. He worked as a photographer for the Grand Trunk Railway and the Chicago and North Western Railway. He was the official photographer of the Canadian Pacific Railway and the Union Pacific Railroad during the construction of their transcontinental railroad lines. In 1879, he founded the Keystone Dry Plate Works. He was an innovator in the development of photographic plates and the first to commercially produce gelatin dry plates in the United States. He was the first to produce celluloid film of high quality for photographic use. This film was provided to William Kennedy Dickson and Thomas Edison for usage in their Kinetoscope.

Early life He was born in Sheffield, England, on December 2, 1832, to Robert and Ann Carbutt. He moved to Canada in 1853 and worked as a photographer from 1853 to 1857 for the Grand Trunk Railway. He worked as a photographer at the Cosmopolitan Gallery in Plymouth, Indiana, from 1858 to 1861. He worked with ambrotype, melainotype, photographs, and stereograms. He returned to Sheffield, England, in 1861 and opened a photographic studio there but moved back to the United States later that year and opened a studio in Chicago, Illinois.

Career

He was the first Chicago-based photographer to develop carte de visite. He gained experience with dry-plate photography as the official photographer during the construction of the Canadian Pacific Railway. In October 1865, he was commissioned to photograph the route of the Northwestern Union Packet Company which included notable locations in Minnesota such as Barn Bluff, Fort Snelling, and Saint Anthony Falls. He travelled with photographer Edward Livingston Wilson in Minnesota to photograph Minnehana Falls. He created a series of stereograms of excursions on the Mississippi River and at Niagara Falls. In 1866, he was hired by the Union Pacific Railroad to document the promotional event of the transcontinental railroad construction reaching the 100th Meridian. He took photos of railroad construction, new towns along the railway, and the camps of the Pawnee people. He produced a series of stereograms titled Rail Road Excursion to the 100th Meridian taken between Omaha, Nebraska, and 100th Meridian. In 1867, he purchased stereographic negatives from William H. Illingworth of his images taken during James L. Fisk's 1866 expedition to find a wagon route from Minnesota to Montana. Carbutt published these images under the title Crossing the Plains with Capt. Fisk's Expedition, 1866. He was commissioned by the Chicago and North Western Railway to photograph the rail route including the iron mining activity near Lake Superior. He worked again with the Union Pacific Railroad and travelled west to Colorado to create stereograms of the Rocky Mountains. In 1869, he took part in an initiative to photograph a solar eclipse in Mount Pleasant, Iowa. In 1868, he developed a process to use gelatin instead of the Collodion-albumen process in the development of dry plates at his studio in Chicago. In 1870, he sold his Chicago studio. In 1871, he began working with the gelatin intaglio process and moved to Philadelphia to commercialize it. He worked as superintendent of the American Photographic Relief Company from 1870 to 1874. However, the process was too expensive and unprofitable. In 1876, he served during the Centennial Exposition in Philadelphia as supervisor of the Photographic Hall. Carbutt founded the Keystone Dry Plate Works in 1879. This was the first production of gelatin dry plates in the United States. His innovations included development of the first gelatine-bromide dry plates in 1879, the first orthochromatic dry plates in 1886, the first celluloid dry plates in 1888, and the first commercial X-ray plates in 1896. His company was known for their high quality lantern slides used in magic lantern projectors. In November 1888, Carbutt produced the first celluloid film one hundredth on an inch thick of high enough quality to be used in photography. This was supplied to William Kennedy Dickson and Thomas Edison for usage in their Kinetoscope. He later experimented with color photography and color screens used in photoengraving. He was a member of the Franklin Institute and the first president of the Photographic Association of America. Carbutt died of kidney disease at his home in the Germantown neighborhood of Philadelphia on July 25, 1905, and was interred at West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania.

Illustrations

Worked examples

Example 1 — a first encounter with John Carbutt

Start with the simplest possible case. Write down what John Carbutt 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 John Carbutt 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 John Carbutt 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 John Carbutt

In research: John Carbutt 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 John Carbutt 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: John Carbutt is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1832 births, 1905 deaths, 19th-century American inventors, so understanding it makes those chapters shorter.
In everyday life: Look for John Carbutt 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 John Carbutt in 20 minutes

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

Frequently asked questions

What is John Carbutt in simple terms?

Why does John Carbutt 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 John Carbutt?

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 John Carbutt.