Transcript Chapter 11 Section 4

Chapter 11
Section 4
MORE
TECHNOLOGICAL
ADVANCES
18
Who was
Samuel
Morse?
Telegraph Speeds
Communication
In 1832 Samuel Morse
perfects the telegraph —a
device that could send
information over wires
across great distances--speeds up communication.
First message sent: “What hath God wrought”
Telegraph key
Information is sent on a telegraph
through pulses of electric current
through a wire. The telegraph
operator tapped a bar, telegraph key,
that controlled the length of each
pulse —Morse Code.
Morse Code is a communication
system that combines dots and
dashes to represent each letter of the
alphabet. A short click is a dot. A long
click is a dash.
---- -- ---–-
–––
–
––– -–- –-––
– - – - – - – ---
Can you figure out the message?
1832- Morse
invents
telegraph
Quicker
communication
Nation is
more
united
1844- telegraph
wired news of pres.
Nomination during
Democratic
National Conv.
Increased
Business
Productivity
Telegraph grew with
railroadscompanies
strung wire poles
along railroads.
1861- first
transcontinental
telegraph
line completed
19
Why did
cities grow
and become
the center of
industry?
By 1860
New
England
has as
many
factories
as the
entire
South
Water powered
factories are
replaced
by steam
powered factories
Cities grow and
become the center of
industry
People immigrate
from foreign
countries and rural
areas for factory
jobs
Business owners
could now build
factories anywhere
Companies begin to
build their factories
close to cities and
transportation
centers.
Easy access for
workers, businesses
can pay lower
wages, shipping
costs lowered
20
Who was
John Deere?
John Deere, a blacksmith,
invented the steel plow in
1837. The steel plow was able
to plow through thick soil
easily. By 1846, Deere was
selling 1,000 plows a year.
21
Who was
Cyrus
McCormick?
Cyrus McCormick
developed the mechanical
reaper in 1831. This machine
quickly and efficiently cut
down wheat. McCormick
advertised his reaper, gave
demonstrations, and let
customers buy on credit.
McCormick and Deere’s
inventions were used
by American farmers
to efficiently plant and
harvest their crops
22
What other
inventions
came out of
the mid1800s?
Companies mass
1849- Walter Hunt
produce
invented the
productssafety pin
ie. a clock in
1800 costs $50,
in 1850 costs
$1.50
Inventions
that made
home life easy
& convenient
Iron cook stoves
replace cooking
fires and stone
1830s- iceboxes,
hearths
cooled by large
blocks of ice, store
fresh food safely for
longer periods
1830s- matches
were introduced
Elias Howe
invented the
sewing
machine
Isaac Singer
improved the
sewing machinecloth production
and repair is
easier
THE END