Physics Of The Turntable Essay

1251 words - 5 pages

The word turntable is the modern term used to describe what is known as the phonograph, gramophone, or record player. The first turntable was invented by Thomas Edison in 1877. It was the first device used for recording and playing back sounds. Modern turntables have the same fundamental components as their ancestors, albeit slightly more sophisticated in design. This paper covers the fundamental technical aspects of modern turntables.

A modern turntable basically works like this: A platter (on which the record sits) is spun by a drive system. The drive system spins the record at specific revolutions per minute (RPM). A pickup system in the form of a stylus and cartridge converts the audio on the record into an electrical signal. A tracking system in the form of a mechanical arm connects the cartridge to the turntable and also enables the pickup system to track the record grooves smoothly and steadily.

In short, there are three components of a modern turntable that need to be inspected in order to understand how one works. These three components are:

* Drive system
* Pickup system
* Tracking ststem

Drive System

The drive system is the part of the turntable that rotates the platter in order to spin a record. There are two types of drive systems in common use today:

* Belt Drive
* Direct Drive

Belt Drive Systems

Belt drive systems consist of a motor and a belt that is connected to the platter on which the record sits. The motor spins the platter at a specific RPM. The most common rotation rates for modern turntables are 33 1/3 RPM and 45 RPM. Motors for belt drive systems are usually isolated or separated from the body of the turntable in order to reduce vibrational noise. However, the drawback to belt drive systems is that the torque is relatively low, so the amount of time it takes the platter to get to its proper velocity is much greater than a direct drive system.
Direct Drive Systems

Direct drive systems consist of a motor that is directly connected to the platter (sometimes the platter is even considered to be part of the motor). There is an almost instantaneous change in rotational velocity of the platter because of this direct connection (absence of a belt), with starting and stopping times of around 0.5 seconds. Another result of this direct connection is that the torque is much higher than in the belt drive models. Higher torque means the platter speed is less susceptible to outside forces, which is another reason why the platter will accelerate to its proper speed faster. This feature is one of the main reasons why direct drive turntables are so popular with DJs today.

Pickup System

A pickup system consists of a stylus and a cartridge. These are the components of the turntable that convert the sound waves etched on a record into an electrical signal. Two types of pickup systems are:

* Piezo-electric pickup systems
* Magnetic pickup systems

Piezo electric pickup...

Find Another Essay On Physics of the Turntable

The Physics of Tennis Essay

932 words - 4 pages The Physics of Tennis I. Introduction Background: A friendly game of tennis is being played. Camera: pans away from the game and zooms to Sunne. Sunne: Hello, my name is Sunne. Today, my group, which consists of Ravi, Gramh, Whitney and myself, will portray how physics plays an essential role in one specific aspect of tennis. This aspect is the tennis racquet itself, which can only be mastered when the

The Physics of Basketball Essay

1478 words - 6 pages The Physics of Basketball The NBA playoffs are making the headlines all over. Every news channel, sports channel, and newspaper has a story about the big games. Everyone is making bets as to who will be the big champions. Will it be the defending champions, Los Angeles Lakers, or will it possibly be one of the underdogs. This is the most intensive time of year for basketball fans as they watch the teams battle out the game. Up and down

The Physics of Basketball

1933 words - 8 pages The Physics of Basketball There are many aspects to the game of basketball and physics can be applied to all of them. Although to be good at basketball it is not necessary to play it from a physics point of view. Basketball players become good by developing muscle memory for the actions that must be performed in the game of basketball from years of practice. Nevertheless knowing some of the physics in the game of basketball can help a

The Physics of Immortality

624 words - 2 pages The Physics of ImmortalityHere it is at last, just what we've all been waiting for! Modern science proves everything you have always wanted: resurrection after death, eternal life, and idyllic sex forever! The abstruse topics of quantum cosmology and computer complexity theory prove it all true: "If any reader has lost a loved one or is afraid of death, modern physics says: 'be comforted, you and they shall live again"! Not only that, but you no

The Physics of Volleyball

1373 words - 5 pages The Physics of o Volleyball From six thirty one morning to three O’ clock the next morning was my longest volleyball day ever. Fourteen and a half hours of play with only 3 breaks for food, makes for an exhausting event. So what makes volleyball worth such a sacrifice? It is the endless possibilities and outcomes that can occur by playing this magnificent sport and challenging the basic laws of physics. In the sport of volleyball the

The Physics of Skiing

1242 words - 5 pages The Physics of Skiing I have been skiing for about five years and I find it to be one of the most fun and challenging sports there is. A lot of the reason it is so challenging is because of the laws of physics such as gravity and friction. In this essay I will discuss how physics relates to skiing and how this physics makes skiing so fun and challenging. I will also discuss how things like wax and the shape and width of your skis can

The History of physics

1326 words - 5 pages Physics began when man first started to study his surroundings. Early applications of physics include the invention of the wheel and of primitive weapons. The people who built Stone Henge had knowledge of physical mechanics in order to move the rocks and place them on top of each other. It was not until during the period of Greek culture that the first systematic treatment of physics started with the use of mechanics. Thales is often said to

The Physics of Ultrasound

873 words - 3 pages Without the use of physics in the medical field today, diagnosis of problems would be challenging, to say the least. The world of medical imaging in particular has benefited greatly from the use of physics. Ultrasound is sound waves that have a frequency above human audible. (Ultrasound Physics and Instrument 111). With a shorter wavelength than audible sound, these waves can be directed into a narrow beam that is used in imaging soft

The Physics of Pool

302 words - 2 pages The game of pool may not be as relaxing as one may think. Rather than just aimlessly hitting the cue ball around a table covered in felt, there is a set of law governing the outcome of play. These laws are known as PHYSICS. Billiards is played by striking the cue ball with a cue stick. The cue ball then collides with the other balls on the table in hopes of propelling one or more balls (preferably not the cue ball) into one of the six pockets

The Physics of Basketball

996 words - 4 pages When you play the game of basketball, you are not aware of at the time some of the physics that are going on all around you. For example, you have all the players using force to accelerate and go to top speed. You have the jump shot which uses vertical and horizontal forces. The spin of the ball affects its place once it hits the rim or the backboard. Dribbling comes into major play because of all the different types of forces and actions going

The Physics of Sound

1459 words - 6 pages the physics and mechanism behind loudspeakers – both electromagnetic and electrostatic. The Physics of Sound To understand how loudspeakers work it is necessary to know some basic sound physics. Sound is essentially a wave produced by a vibrating source. This compression and rarefaction of matter will transfer to the surrounding particles, for instance air molecules. Rhythmic variations in air pressure are therefore created which are detected

Similar Essays

The Physics Of Football Essay

1162 words - 5 pages The Physics of Football The crowd is cheering as the quarter back from the Chicago Bears throws the football 25 yards to the star wide receiver. As the wide receiver catches the football, he starts off on a mad dash to make a touch down. During his run for the touchdown, he does not see his opponent from the Dallas Cowboys sneaking up on him to stop his success. The wide receiver from the Chicago Bears is tackled by his opponent and

The Physics Of Football Essay

1226 words - 5 pages The Physics of Football There is no question that everything people do in their lives involves physics. This is true from the way we communicate to the way that we fight wars. In some cases the influence of the laws of physics on our world are extremely apparent, such as in sports. Basketball, hockey, baseball and even cricket involve physics. From the most basic motions players perform in the game, to different plays designed by coaches

The Physics Of Bowling Essay

1762 words - 7 pages The Physics of Bowling The definition of physics by some may be the science that deals with matter, energy, motion, and force. Therefore everything in the world uses physics in some way or another. One of the numerous things that deal with physics is bowling. Some of the major parts of physics bowling has is the motions, the ways that Newton’s laws apply, the different momentums, and the energy. Other physics topics include torque

The Physics Of Judo Essay

927 words - 4 pages The Physics of Judo Judo is a martial art that is centered around physics. Even just the concept of throwing somebody is physics. To practice judo and not have a basic knowledge of physics is insane considering that physics is what makes judo possible. Judo is sport that consist of throws, take downs and over all control. Judo without physics is like have a sandwich with just bread, you don’t get much out of it. To understand how