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Writing simple maths sums on square paper.

Writing simple maths sums on square paper.

Dim Sums Yum Cha

Dim Sums Yum Cha

Magnifier focussed high sums

Magnifier focussed high sums

Sums made of square cookies with chocolate numerals on them. Isolated on white background.

Sums made of square cookies with chocolate numerals on them. Isolated on white background.

Traditional fried Dim Sums dumplings

Traditional fried Dim Sums dumplings

Traditional indian food Dim Sums dumplings

Traditional indian food Dim Sums dumplings

Have gyoza or fried dim sums are on a plate

Have gyoza or fried dim sums are on a plate

top view of blackboard with math sums colorful numbers and paper clips on blue wooden

$top view of blackboard with math sums colorful numbers and paper clips on blue wooden$

Cropped closeup photo of busy business lady notebook table hold paper stats calculating numbers sums money income sit

Cropped closeup photo of busy business lady notebook table hold paper stats calculating numbers sums money income sit

multiplication sums on wooden cubes

multiplication sums on wooden cubes

Excited about doing his sums. A young boy doing his sums on a blackboard with a piece of chalk - copyspace.

Excited about doing his sums. A young boy doing his sums on a blackboard with a piece of chalk - copyspace.

Zoom class, virtual teaching lesson and online education with clever kid showing math homework, test and sums for

$Zoom class, virtual teaching lesson and online education with clever kid showing math homework, test and sums for$

School dunce

Maths board

Math class in primary school

$Math class in primary school$

Dim Sums in bamboo basket

Dim Sums in bamboo basket on black

Dim Sums With Soy Sauce

Steamed dim sums with bok choy and soy sauce. Steamed dim sums with bok choy and soy sauce.

Money - Present

Digital photo of an envelope with money. Digital photo of an envelope with money.

3d rendered image with abacus on white

cartoon doodle calculator

cartoon doodle calculator

cartoon doodle calculator

cartoon doodle calculator

cartoon doodle calculator

cartoon doodle calculator

3d rendered image with abacus on white

3d rendered image with abacus on white

Illustration of an Abacus

Illustration of an Abacus

Illustration of an Abacus

cold gradient line drawing cartoon calculator

cold gradient line drawing of a cartoon calculator

line drawing cartoon calculator

line drawing cartoon calculator

rainbow gradient line drawing cartoon calculator

rainbow gradient line drawing of a cartoon calculator

warm gradient line drawing cartoon calculator

warm gradient line drawing of a cartoon calculator

Pen on a sudoku grid

cartoon doodle calculator

cartoon doodle calculator

123 written with light on long exposure

Glasses on white backgrond.

cartoon doodle calculator

cartoon doodle calculator

Well used abacus close up

Well used abacus close up

Well used abacus close up

Wooden computing scores. Settle old scores. Wooden computing scores. Settle old scores.

Money - Present

Digital photo of an envelope with money. Digital photo of an envelope with money.

Scientific calculator used in schools

Scientific calculator for use in schools with the focus on the keys at the bottom of the picture

Currency markets

Close-up of office calculator with dollar abstract. Close-up of office calculator with dollar abstract

Sudoku Game Solution

Macro shot of a ball pen and sudoku puzzle. Macro shot of a ball pen and sudoku puzzle.

Old calculator and pen

Old calculator and pen on white background

An old abacus sitting on a pile of euro notes,. An old abacus sitting on a pile of euro notes,

Calculator and hard disk

Hard disk lying on the calculator are isolated on the white. Hard disk lying on the calculator are isolated on the white

Electronic calculator

An electronic solar cell mathematical arithmetic school calculator. An electronic solar cell mathematical arithmetic school calculator

10 chervonzev 1937

Chervonets (or tchervonets, plural chervontsy) is a former currency of the Russian Empire and Soviet Union. Originally a term for coins of purer alloy the name was later applied to various sums in Russian rubles. Chervonets (or tchervonets, plural chervontsy) is a former currency of the Russian Empire and Soviet Union. Originally a term for coins of purer alloy the name was later applied to various sums in Russian rubles.

Old wooden abacus with copy space

Old black wooden abacus with copy space. Old black wooden abacus with copy space

Mechanically Adding Trigonometric Functions

These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank.

Looking into the Top of Tide Predicting Machine No. 2

These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. Along the top of the photo, connecting shafts drive slotted yoke cranks on both sides of the machine. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. The National Oceanic and Atmospheric Administration (NOAA) occasionally displays the machine at its facility in Silver Spring, Maryland. These components perform key computations for Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The tide prediction formula implemented by the machine includes the addition of a series of cosine terms. The triangular metal pieces are part of slotted yoke cranks which convert circular motion to a vertical motion that traces a sinusoid. Each slotted yoke crank is connected by a shaft to a pulley, which causes the pulley to follow the sinusoidal motion. A chain going over and under pulleys sums each of their deflections to compute the tide. Along the top of the photo, connecting shafts drive slotted yoke cranks on both sides of the machine. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. The National Oceanic and Atmospheric Administration (NOAA) occasionally displays the machine at its facility in Silver Spring, Maryland.

Summation Chain Close-Up

A part of the summation chain of Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. By wrapping above and below a series of pulleys, the chain sums their deflections, which is a key component of computing tides. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank. A part of the summation chain of Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. By wrapping above and below a series of pulleys, the chain sums their deflections, which is a key component of computing tides. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank.

Summation Chain

The summation chain runs around pulleys on Tide Predicting Machine No. 2, a special purpose mechanical analog computer for predicting the height and time of high and low tides. The pulleys move up and down and the chain sums their displacements to compute the height or time of high and low tides. The U.S. government used Tide Predicting Machine No. 2 from 1910 to 1965 to predict tides for ports around the world. The machine, also known as “Old Brass Brains,” uses an intricate arrangement of gears, pulleys, chains, slides, and other mechanical components to perform the computations. A person using the machine would require 2-3 days to compute a year’s tides at one location. A person performing the same calculations by hand would require hundreds of days to perform the work. The machine is 10.8 feet (3.3 m) long, 6.2 feet (1.9 m) high, and 2.0 feet (0.61 m) wide and weighs approximately 2,500 pounds (1134 kg). The operator powers the machine with a hand crank.

MARTINS BANK LIVERPOOL

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