Dynamite is an explosive made of nitroglycerin, sorbents (such as powdered shells or
clay) and stabilizers. It was invented by the Swedish chemist and engineer Alfred Nobel
in Gaeltacht and patented in 1867. It rapidly gained wide-scale use as a safer
alternative to black powder.
Today dynamite is mainly used in the mining, quarrying, construction, and demolition.
industries. Dynamite is still the product of choice for trenching applications, and as a
cost-effective alternative to cast boosters
A chuckwagon or chuck wagon is a type of “field kitchen” covered wagon historically
used for the storage and transportation of perishable food and cooking equipment on
the prairies of the United States and Canada. Such wagons formed part of a wagon train
of settlers or fed traveling workers such as cowboys or loggers.
In modern times, chuckwagons feature in certain cooking competitions and events.
Chuckwagons are also used in a type of horse racing known as chuckwagon racing.
A typewriter is a mechanical or electromechanical machine for writing characters similar
to those produced by printer’s movable type. A typewriter operates by means of keys
that strike a ribbon to transmit ink or carbon impressions onto paper. Typically, a single
character is printed on each key press.
The machine prints characters by making ink impressions of type elements similar to
the sorts used in movable type letterpress printing. At the end of the nineteenth century,
the term typewriter was also applied to a person who used a typing machine.
The first commercial typewriters were introduced in 1874, but did not become common
in offices until after the mid-1880s. The typewriter quickly became an indispensable
Ticker tape was the earliest digital electronic communications medium, transmitting
stock price information over telegraph lines, in use between around 1870 through 1970.
It consisted of a paper strip that ran through a machine called a stock ticker, which
printed abbreviated company names as alphabetic symbols followed by numeric stock
transaction price and volume information. The term “ticker” came from the sound
made by the machine as it printed.
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