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There is no flat answer(no pun intended) as there are different typ[es of seismographs. Obvisoulsy the big ones are non-portable and are mounted on fixed axes so they are virtually a part of the earth"s crust of bedrock. These instruments counting auxiliary ballast and such like would weigh several tons. as they are stationary, the weights are not generally quoted. Thee are portable seismometers used for mining and prospecting and these can be as light as perhaps ten or fifteen pounds. all things being equal the big boys are more accurate. in some Seismological stations they have three Seismographs, normally on all the time on different axes- for example: North-south, East_west, and vertical (Up and down) the last application would require a Gallitzin type of Seismogaph invented in Czarist Russia in about l906.This type is made in portable forms but has to be oriented to the precise vertical or horizontal axis before use-rather like a modern 35MM Camera. Sperry made seismographs. They are better known for Gyroscopes , but they did make Sesimographs,.ratrher seismometers, these were Three-axis types and could be used on Survey Ships -for oceanographic work. The three axes (R.P.I.) were selected by small rotary switches like those on some household lamps-twist on and off.
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What is the plural form of modern teacher?
The plural form of "modern teacher" is "modern teachers."
What are the advantages and disadvantages of moving average method?
Advantages of moving average method include simplicity, easy implementation, and ability to smooth out short-term fluctuations in data. Disadvantages include potential lag in forecasting, inability to capture sudden changes in data patterns, and reliance on historical data which may not always reflect future trends accurately.
What is the physical quantity of weight?
Weight is a measure of the gravitational force acting on an object due to its mass. It is typically measured in units such as pounds or kilograms.
Is film a modern technology As the alphabet is pre modern?
Film is a modern technology that involves capturing, storing, and projecting moving images. The alphabet, on the other hand, is pre-modern and dates back to early civilizations, enabling written communication and literacy. Both film and the alphabet have had significant impacts on society and communication.
What is 20 pound copy paper?
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Who created the first modern seismograph?
John Miline invented the first modern seismograph in 1880
Who created a seismograph?
John Milne created the first modern seismograph.
Who invented the modern seismograph in 1880?
John
How many sensing devices are in a modern seismograph?
12
Where did John Milne invent the seismograph?
John Milne invented the seismograph in Tokyo, Japan in the late 19th century. He installed the first modern seismograph at the Imperial University of Tokyo in 1880.
What was the average weight of a female Cro-Magnon?
Cro-Magnon were early modern humans. The weight would be the same as a modern female.
How big is the average military tank?
The average weight of an modern tank is about 60-65 tonnes.
Who invented the seismorgraph?
The first seismograph was invented by Zhang Heng in 132. The modern seismograph was invented by John Milne, Thomas Gray, and James Alfred Ewing in 1880.
What measures Earth's vibrations?
seismograph seismograph seismograph seismograph
Which part of the seismograph moves as the ground shakes during an earthquake?
The part of the seismograph that moves during an earthquake is called the pen.
How does a person use a seismograph?
In simple terms a seismograph works with a pen attached to a heavy weight hanging near the ground. As the ground shakes the line being drawn by the pen wiggles to reveal how strong the earthquake is.
How doe a seismograph work?
A seismometer, sometimes known as a seismograph, in modern day is usually inertial an it has: 1) A weight of some kind, called the inertial mass, that moves inside but stays attached. 2) A recording device for the mass. Basically, the motion in the ground, even very slight, will move this weight and it is the movement of the weight which causes a reading on changes underground. Some modern systems now use electronics. Instead of a writing device for recording, it uses magnetic strips to record information. A seismograph records data from an earthquake with a needle and ink. When an earthquake occurs ts records this data and uses the needle with ink on it to show the highs and lows of the P waves, S waves, and surface waves the earthquake produces. The ink lines are recorded on graph paper showing the number of how high or low the earthquake's strength is and measures the waves.
