Aquarium, receptacle for maintaining aquatic organisms, either freshwater or marine, or a facility in which a collection of aquatic organisms is displayed or studied. The earliest known aquarists were the Sumerians, who kept fishes in artificial ponds at least 4,500
The word piano is a shortened form of pianoforte, the Italian term for the early 1700s versions of the instrument, which in turn derives from gravicealo col piano e forte and fortepiano.The Italian musical terms piano and forte indie "soft" and "loud" respectively, in this context referring to the variations in volume (i.e., loudness) produced in response to a pianist''s touch or pressure
Origins The 1970s The 1990s 2007: Fuel Cells Commercialise The Space Programme The 1980s The 2000s Recent Developments Origins The concept of a fuel cell had effectively been demonstrated in the early nineteenth century by
Ether (from the Latin "aether" and the Greek "eithr," or "the upper and purer air") is believed to have been first synthesized about 1540 by German botanist and chemist Valerius Cordus (1515-1544), who called his discovery "sweet oil of vitriol" and
The Wikipedia article on adhesives has an uncited claim that thermoplastic adhesives were invented in the 1940s by Proctor and Gale by a man named Paul Cope. Again, this becomes hard to verify, because innumerable content farms merely copy the Wikipedia article, and most of the search results are variations of this same initial claim (many have the same exact wording).
In 1886, a German inventor Ottmar Mergenthaler of Baltimore invented the linotype machine. In July 1886, in the printing office of New York Tribune, the first commercially used machine was installed. It is used in printing and produces an entire line at once of metal type.
10/8/2020· History of photography, method of recording the image of an object through the action of light, or related radiation, on a light-sensitive material.The word, derived from the Greek photos (“light”) and graphein (“to draw”), was first used in the 1830s.
No one knows exactly how or who invented the first kite. It is thought that the earliest use of kites was among the Chinese, approximately 2,800 years ago. The kite was said to be the invention of
25/6/2020· This type is known as an Albada viewfinder (after the Dutch military officer and optical designer Lieuwe Evert Willem van Albada, who invented this and other optical systems). In the Albada finder pictured to the right, both faces of the front lens are concave; the
17th, 18th and 19th Century English and American Pies: English women were baking pies long before the settlers came to America. The pie was an English specialty that was unrivaled in other European cuisines. Two early examples of the English meat pies were shepherd’s pie and cottage pie..
10/10/2010· And even others argue that R. Stanton Avery, the founder of popular “Avery Labels,” is the actual inventor of the sticker, when he invented the first self-adhesive label in 1935. Many early stickers were the pre-apply type, meaning you had to somehow “wet” (lick, apply water, etc.) the back / adhesive side of the sticker before applying.
11/9/2008· Electricity is a natural phenomenon and so it was not ''invented'' but "discovered". The discovery took place since ancient times, from the lightnings though the experiments were premitive. In the Seventeenth Century the English physician William Gilbert made a careful study of electricity and magnetism, coined a new Latin name for the phenomenon which finall gave rise to the English words
30/1/2017· An American, John E. Turnbul, invented the roller washing machine. 1851 James King filed a patent for the first drum machine. This model, however, was still mechanical and the engine was activated with a crank. All the same, physical exertion was reduced.
The First Sweets - Who Invented First Candy Cave man made candy out of honey by drying it and forming a taffy-like concoction to satisfy their sweet tooth. It is believed that Indians were the first to use the sweet juice of sugarcane about 3000 years ago and that they were the first to make brown sugar.
In the Type K potentiometer this was in the form of a ten-turn coil, a design due to Kohlrausch. The potentiometer was used with an external standard cell and an external galvanometer. Using a potentiometer to make voltage measurements was somewhat slow, but you could read to 0.00001 Volt.
While the electromagnet part of the speaker was invented early on in the 1860s, it took 40 more years to develop a knowledge of acoustics and materials. C.W. Rice and E.W. Kellogg finally invented it by solving the final part of the
In 1908, square-drive screws were invented by Canadian P. L. Robertson. Twenty-eight years before Henry Phillips patented his Phillips head screws, which are also square-drive screws.The Robertson screw is considered the "first recess-drive type fastener
There is a dispute as to who invented the machine that became known as the "velocipede," but there is no question as to its impact. The velocipedes of the mid 1800s consisted of two wooden tires, a front fork, handlebars for steering, a saddle on wooden frame, and pedals on the axle of the front wheel.
Later, he invented a machine that re-created his “accident.” However, it wasn’t for another few decades that offset printing began to gather momentum. Compared to lithograph presses, which utilized stone plates, offset printing was imprinted from rubber, and the image could be transferred onto not only paper, but other surfaces such as wood and metal for versatility.
The specifiions of Type 3 fonts were published and soon tools to create Type 3 fonts emerged. Type foundries like MonoType released entire libraries of Type 3 fonts. The fact that Adobe kept the superior font format to itself made all of these companies very angry but at the same time PostScript became a runaway success that led to a much larger market in which everyone could sell fonts.
In the early 1900s Austrian chemist, Rudolf Seiden, developed tempered glass. In 1905 John Crew invented type of safety glass using tree resin between two layers of glass. Benedictus patented "Triplex" in 1909. This new safety glass was strengthened with a
In 1801 Sir Humphrey Davy invented the first electric carbon arc lamp by connecting two wires to the battery and attaching a charcoal strip to the other end of the wires making charge carbon glow. Again primitive, it needed perfecting and during the 1870s, both Thomas Edison and Sir Joseph Swann invented electric incandescent lamp independently (Edison by improving the 50 year old patent).
When was the radio invented? Where did it come from, and why did it have such a profound impact on our lives? Today, radios are a common technology in the home and car. Wherever you go, you can connect to your favourite shows. Some forward-thinking digital
A type of discharge lamp, these lights didn’t gain popularity until the early 20th century when researchers began looking for a way to improve lighting efficiency. Discharge lamps became the basis of many lighting technologies, including neon lights, low-pressure sodium lamps (the type used in outdoor lighting such as streetlamps) and fluorescent lights .
My mother and aunt started canning in the 1960s and ‘70s, when the Mason jar experienced another resurgence. This time, it was as part of the back-to-the-land DIY movement, a reaction to the
That is why the file type of a PDF file on Macintosh was ‘CARO’. Adobe asked a steep price for the tools to create PDF files. Acrobat Distiller was available in personal and network versions, priced at $695 and $2,495 respectively. You even had to pay 50 dollar