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Farmer seeding, sowing crops at field.

Farmer seeding, sowing crops at field. Sowing is the process of planting seeds in the ground as part of the early spring time agricultural activities.

Espresso cafe flowing into a cup. Espresso cafe flowing into a cup.

The oil sucking machine and inverted image sunrise

The photo taken in China's heilongjian province daqing city,chenjiadayuan lake.The time is November 4, 2013. The photo taken in China's heilongjian province daqing city,chenjiadayuan lake.The time is November 4, 2013.

Time Machine Illustration Vector

Time Machine Illustration Vector

The old machine has long-standing, not used for a long time. The old machine has long-standing, not used for a long time

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.

Clock metal gear

Clock metal gear time machine

Stargate logo concept alien construction isolate on transparent background. Stargate Time Machine Portal

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.

The old machine has long-standing, not used for a long time. The old machine has long-standing, not used for a long time

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector illustration

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector illustration

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.

On a fire. Are ready to departure.

The fire machine at a gate of fire station. The fire machine at a gate of fire station.

Skeleton of vintage handmade antique mechanical pocket watches, clockwork old mechanical watch, high resolution and detail, winter

Skeleton of vintage handmade antique mechanical pocket watches, clockwork old mechanical watch, high resolution and detail, winter time and summer time concept. selective focus.

Photography of Person Holding Flashlight Near Windmills during Night Time

Photography of Person Holding Flashlight Near Windmills during Night Time

Nostalgic Time Machine

Nostalgic Time Machine

Lines of the reserved tank

Flashbacks about a war-time, metallic part of tank,fighting machine. Flashbacks about a war-time, metallic part of tank,fighting machine

Decorative vintage font Time Machine

Decorative vintage font Time Machine

Decorative vintage font Time Machine

Decorative vintage font Time Machine

Blue gear machinery

Macro photo with pinion machine. Macro photo with pinion machine

The oil sucking machine and reed snow lakeside

The photo taken in China's heilongjian province daqing city,chenjiadayuan lake.The time is November 21, 2013.After snow. The photo taken in China's heilongjian province daqing city,chenjiadayuan lake.The time is November 21, 2013.After snow.

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector illustration

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector illustration

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector illustration

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector illustration

Blue mercedes Sedan Near Green Grass Field during Day Time

Blue mercedes Sedan Near Green Grass Field during Day Time

Detail of old machine cog wheels

Metallic construction of tank

Flashbacks about a war-time, metallic part of tank,fighting machine. Flashbacks about a war-time, metallic part of tank,fighting machine

The deformed hours with the Arabian figures. Distortion of time and space. The machine of time. The deformed hours with the Arabian figures. Distortion of time and space. The machine of time

Vintage Industrial Steampunk Time Machine

Vintage Industrial Steampunk Time Machine

3D Stargate concept alien construction isolate on transparent background. Stargate Time Machine Portal

3D Stargate concept alien construction isolate on transparent background. Stargate Time Machine Portal

Time machine

Working oil pump jack at night time.

Working oil pump jack at night time. Oilfield during winter. Refinery lights background. Oil and gas concept. Toned.

Detail of old machine cog wheels

Christmas purchase

Christmas purchase, colored carrying bags with piggy bank and adding machine

History of machines

Flashbacks about a war-time, metallic part of tank,fighting machine. Flashbacks about a war-time, metallic part of tank,fighting machine

The old machine has long-standing, not used for a long time. The old machine has long-standing, not used for a long time

Step into the future with the Time Machine Capsule

Step into the future with the Time Machine Capsule

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector

Abstract Futuristic Technology Background with Clock concept and Time Machine, vector

Decorative vintage font Time Machine

Decorative vintage font Time Machine

Elevator time machine going to the present

Elevator time machine going to the present

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