Category Archives: Instrument

The Secrets About Musical Instruments And Physics

The Secrets About Musical Instruments And Physics

Every sound produced by a musical instrument has a physical explication, the way instruments are created and the type of materials that are used define in a unique way the resulting sound. The sound wave is a transfer of energy that doesn’t imply matter. Within a more theoretical approach sounds are Mechanical Longitudinal Waves. So, musical instruments and Physics are intimately related. How can they coexist?

There is a mathematical formula that actually explains music, starting from the musical instruments and the Physics’ properties. The wavelength of the sound is defined as an interval between two points where the sound doesn’t have a repeated behavior. The period (T) represents the shortest interval where the wave behavior doesn’t repeat. Hence, the total number of vibrations the sound will realize in one second represent the Frequency (f).

Every sound travels at a specific speed depending on the wavelength and the frequency, so the same instrument can produce quite an interesting process. Interference is another thing that must be discussed when analyzing musical instruments and in the Physics context. It is very probable for two sounds to be present simultaneous is the same place at the same time. The effects of combined waves are usually analyzed using the Superposition theory.

To put it in a simple way, imagine two identical musical instruments in a standard Physics experiment. Let’s say they are two trumpets. If they are blown at the same time, on a certain frequency, the result may give you a headache. When the crest of two waves meet the result is usually annoying for the human ear, the resulting phenomena is called destructive interference.

Furthermore, it is good to say that after passing the intersection between the waves they will return to the initial form. Most people have no clue about what it is going on behind the magic of music. The relationship between musical instruments and Physics comes more like a curiosity for most of us, who are ignorant of the rules of Physics phenomena. Yet, such information is crucial for those who make the instruments as such.

The most relevant to our knowledge is the intensity of the sound. This is also part of relationship between the musical instruments and Physics. Our hearing capacities are those that determine the intensity of the sound at a very subjective level. Otherwise, Physics uses a standard scale to measure the way sounds in the surrounding world touch upon our auditive system.

Dental Evaluation Necessary For A Child Playing A Wind Or String Instrument

Dental Evaluation Necessary For A Child Playing A Wind Or String Instrument

One particular orthodontist from New York is advising parents to first check with a dentist whether their child should or shouldn’t start playing a wind instrument. This dentist explains that a number of dental problems are a result of the instruments that one plays. Not much thought is really given to the kind of musical instruments kids play, the orthodontist explained in a recent issue of the Journal of the American Dental Association.

Eventually, the children will discover that the instrument does not really fit them dentally or temperamentally. Many would wind up as handicapped musicians playing only on a mediocre level. Certain dental problems are caused by wind instruments, and so every good dentist must keep would be musicians, teachers, and parents about these things.

A child and his parents must seek out the dentist’s advice before making the decision that is is sure to cost time, money, and effort. A lot of dentists agree that many cases involving body tissue illnesses are because of the playing of single reed instruments by wind musicians. This is because you place much of the instrument’s weight on your lower lip which gets its support from your teeth. Continuous pressure on the teeth prevents a constant flow of blood from entering into the affected bone area.

He said the strong muscles of the jaws also unintentionally increase the outward pressure against some upper teeth which can harm the current proper teeth alignment. The playing of brass instruments also causes the lips to press against the lower and upper teeth. He said extended periods of playing these instruments have caused some mobility or unnecessary movement of the teeth. Those with irregular or sharp front teeth may experience pain on their lips when they play the oboe while those with short upper lips would have a difficult time playing the flute.

There is also a possibility of acquiring dental problems through the playing of string instruments. He said previous studies have shown that continuous violin playing causes much pressure on the jaw, especially the part which holds the violin against the shoulder, and this may lead to a faulty bite in some people. Dental problems may be avoided if the would be musician would have an oral examination, especially of his tongue and lips. Your handicap as a would be musician would be solved through the proper recommendation of your dentist given early to ensure dental suitability and oral health.

The best way to avoid any major problems later on in life is to get checkups early on. This is more true when it comes to playing music with wind instruments. Whatever the activity, as long as your mouth and teeth are involved, go see your dentist.

Hebrew Musical Instruments, A Vital Part Of Culture

Hebrew Musical Instruments, A Vital Part Of Culture

Music is a great form of communication; it facilitates religious ceremonies, and celebrates victorious battles. Jubal was the inventor of Hebrew musical instruments. The whole Hebrew history and literature are proving that the Hebrews are really committed to cultivate music. We all remember that after the passage of the Red Sea, Moses and his people sang their song of happiness and freedom.

The time of David and Solomon is the golden age of Hebrew music; it is systematically cultivated and it is the main part of training in schools. Hebrew musical instruments are also used in their private life. Among the Hebrew musical instruments, an important place is given to stringed instruments, such as the kinnor – a kind or farp, the nebel a lyre, the sabbeka- a lute. Among the wind instruments, we mention the ugab a syrinx, the qeren a horn, the shophar a trumpet, the hafsoserah a trumpet, the halil a flute, the sumponyah a bagpipe. The Hebrew musical instruments from the percussion category are the toph a drum, the paamon the bells, the tseltselim cymbals, the mennan’im cornets, the shalishim triangles.

Old Hebrew musical instruments
The bells were very important Hebrew musical instruments; they were attached to the hem of the high priest’s ephod. The cornet is named shophar in Hebrew because of its brightness and its clear sound. Cymbals are also very popular Hebrew musical instruments; two pieces of brass, one for each hand, are clashed together to produce a really loud sound. The dulcimer is a Hebrew musical instrument; it is a kind of lute. The flute is composed of a number of pipes; it is common also among other people from Asia.

The harp (kinnor in Hebrew) is the national musical instrument of the Hebrews; the harp was invented by Jubal and is used as accompaniment to Hebrew songs such as praise to God. The horn is not only a Hebrew musical instrument; it is also used metaphorically for strength and honor, as emblems or power. The organ is a wind Hebrew musical instrument, similar to the Pan’s pipe.

The psaltery is another Hebrew musical instrument, a king of lyre, with twelve strings. The tabret is a one-sided drum, a kind of tambourine; the timbrel is also a small drum or a tambourine. Trumpets are a large variety of forms, and are made in different materials. Silver trumpets are specific Hebrew musical instruments, and are used by the highest priests to announce a war or a festival.

An Example Of Indian Musical Instruments

An Example Of Indian Musical Instruments

If you have heard something about the musical instrument of India, then most probably, you are familiar with the kind of music that they have. India are most of the time have this passion when it comes to music. So it is not surprising that they have lots of instrumental instrument that they are using whenever they want to play it and have to unwind their mind with music that they would always wanted.

When you go to India, you will notice that this country is a country of diversity and is a rich of culture country. They are rich in culture in the sense that they are preserving all the things that are part of their history and their heritage. You can say that this country is a country with a traditional living but still contemporary. They are not left behind about the things that are happening in their surroundings and the things that are currently in the trend.

When it comes into their music, they have a passion into it. They are good in playing instruments that are good to hear. These instruments are divided into many categories depending on different types of classification. A significant classification is based on the mechanism used for producing sound under which instruments are divided into four basic categories. These categories are the strings, percussion, wind and brass. They are classified according to how they are being played.

One example of their musical instrument is the tabla. This instrument is a very popular percussion in India. It is consist of two drums called as the tabla and dagga. The tabla is the treble drum and is generally made of wood and the top is covered with stretched skin. The skin is wrapped around the wood frame with the help of leather strings called the wadi and the round wooden blocks called the gatta. The tuning is done with the help of a hammer which is struck to the on the gatta to tense or relax the skin. The dagga is generally made of brass or copper. The tabla is about 11 inches long while the dagga is about 10 inches long. This is a good instrument that is commonly used by the Indians.

Tips to Choose the Right Scientific Instruments Exporters

Tips to Choose the Right Scientific Instruments Exporters

Scientists use various different kinds of machines, equipments and devices for doing their experiments. These devices are broadly divided in to physics, biology and chemistry lab devices.

These devices are made by experts that have scientific knowledge. It is not possible for scientists to carry out various genius experiments without using advance technology instruments. These devices are also used for measurement of various chemicals, medicine and many other drugs that are used in experiments. Some of the common measurement devices are barometer and thermometer. The thermometer is available in almost all homes for measurement of body temperature. There is no need of expert for using the thermometer. Various scientific instruments are also used in medical colleges to give foundation level knowledge to medical students. Demand of high quality and advanced scientific devices are increasing day by day all over the world. Selecting right scientific instruments exporters is very essential for successful experiments and technological work. It is always advisable to purchase branded instruments from any well know organizations. You can compare devices of different brands according to their features and price. Accuracy is also one of the vital feature that should have to be consider while choosing laboratory equipments.

Always purchase these medical equipments from the companies which have legitimate authority to manufacture and export these devices. Scientific instruments manufactures past record guide you in right way weather you have to buy these companies product or not. For these you can take assistance from its previous clients and customers. You can also search in the internet for collecting information about the manufacturer and its product. Stability of exporters business guide you in correct way.

Product quality and client satisfaction level are two main point for selecting laboratory instruments exporters. There may be chance that same quality and feature products of different brands vary in price. For this it is always suggestible to talk to many scientific instruments manufactures before making deal with one of them. The companies that provide warranty period are reliable. These companies replace the device if it has some type of problems. However always collect manual documents that are sign by authorized person in the organizations. In these documents all information about branded products such as features, quality and warranty information is available. Read these documents carefully before making deal with the company. The time duration that company need to deliver their equipments also plays significant role in deciding weather you want to purchase these equipments from them or not. Lastly your budget matters a lot in your final decision.

Naugra Export is a right scientific instruments exporters & manufacturer company in India, offers high quality scientific instrument products at responsible price.

The Westminster Assembly & Instrumental Music In Public Worship

The Westminster Assembly & Instrumental Music In Public Worship

Instrumental Music in Public Worship: History Surrounding the Westminster Assembly

FROM: “INSTRUMENTAL MUSIC IN THE PUBLIC WORSHIP OF THE CHURCH”

By John L. Girardeau (Still Waters Revival Books, [1888] 2000), pp. 132, 133.

Before the Westminster Assembly of Divines undertook the office of preparing a Directory of Worship, the Parliament had authoritatively adopted measures looking to the removal of organs, along with other remains of Popery, from the churches of England. On the 20th of May, 1644, the commissioners from Scotland wrote to the General Assembly of their church and made the following statement among others: “We cannot but admire the good hand of God in the great things done here already, particularly that the covenant, the foundation of the whole work, is taken, Prelacy and the whole train thereof extirpated, the service-book in many places forsaken, plain and powerful preaching set up, many colleges in Cambridge provided with such ministers as are most zealous of the best reformation, altars removed, the communion in some places given at the table with sitting, THE GREAT ORGANS AT PAUL’S AND PETER’S IN WESTMINSTER TAKEN DOWN (emphasis added), images and many other monuments of idolatry defaced and abolished, the Chapel Royal at Whitehall purged and reformed; and all by authority, in a quiet manner, at noon-day, without tumult.”1 So thorough was the work of removing organs that the “Encyclopaedia Britannica” says that “at the Revolution most of the organs in England had been destroyed.”2

When, therefore, the Assembly addressed itself to the task of framing a Directory for Worship, it found itself confronted by a condition of the churches of Great Britain in which the singing of psalms without instrumental accompaniment almost universally prevailed. In prescribing, consequently, the singing of psalms without making any allusion to the restoration of instrumental music, it must, in all fairness, be construed to specify the simple singing of praise as a part of public worship. The question, moreover, is settled by the consideration that had any debate occurred as to the propriety of allowing the use of instrumental music, the Scottish commissioners would have vehemently and uncompromisingly opposed that measure. But Lightfoot, who was a member of the Assembly, in his “Journal of its Proceedings”3 tells us: “This morning we fell upon the Directory for singing of psalms; and, in a short time, we finished it.” He says that the only point upon which the Scottish commissioners had some discussion was the reading of the Psalms line by line.

ENDNOTES:

1. Girardeau cites this quotation from the Acts of Assembly of the Church of Scotland, 1644.

2. Girardeau cites Art., Organ.

3. Girardeau cites Works, Vol. xiii., pp. 343, 344; London, 1825.

For information about the Puritans, including free and discounted Puritan books, Puritan MP3s, Puritan digital downloads, and Puritan videos, as well as the Puritan Hard Drive, please visit Still Waters Revival Books at .

Ancient Tv Plays Pk Modern Instruments

Ancient Tv Plays Pk Modern Instruments

I don’t how you would think of them after seen these astonishing modern instruments. I thought it’s kind of interesting, and I haven’t watched so far. As a hot costume piece recent present, it enjoys a high popularity. Actually I don’t know since when the costume piece has a trend of being modernized.

Though some special effects are about to attract audience eyes, they also result to the in authenticity. However, the modern instruments in have reached a brand new level.

I have to say, these emends are bull shits. I didn’t like them at all. The most interesting part that attract me is the different period, which I can see something different of the real life. But in that movie I also see so many thing that I don’t want to see. I’m really lost confidence to the director who shit this beautiful story.

At all time, any program has the certain and specific group of audience. Who are the audiences of , and who feel exciting and satisfied with some TV programs, for example , JinYong series of CCTV? maybe just the youngsters. They are a group who lack the judgment of something, and they are easily affected by the fashion that it is not sure good. From the internet, I get information that a youngster think Zhou JieLun is far greater than Jackson. I feel it’s so ridiculous, and deeply worry about the judgments of some people. Sometimes, the mind of young people is just like a white paper, but its often written very strange.

In my opinion, whether to use the modern equipment is not important. We should focus our attention on whether the play is interesting or splendid. Why we watch the costume piece? We are looking for fun, not for the authenticity. The modern equipment can make the screen more interesting and funny. So I just support these costume pieces.

As for Jay Chou you mentioned, and I guess the Jackson refers to Michael Jackson. For my part, I utterly cant accept the comment that Jay Chou is greater than MJ. For one reason, MJ is one of my most respectful performers and also one of the greatest performers admitted by public. As a matter of fact, I don’t like Chous voice, appearance and character, but his music makes me feel different. It’s just far more different than pop music. So I don’t exclude his music, and when I listened and listened, gradually get used to his music. It’s not that bad.

What Is The Need For Instrument Calibration

What Is The Need For Instrument Calibration

You will be well aware of the fact that the instrument calibration plays an important role in any manufacturing industry. Behind the origin of any successful product is a perfect calibration. Instrument calibration is not just used in just a particular part of the manufacturing process. Instrument calibration is done right from the design stages of the products itself. The design instruments such as the drafting tools should be calibrated properly to generate flawless designs that will increase the productivity ad reduce the wastage. This article is all about the need for the instrument calibration. Just keep on reading.

The main motive of instrument calibration is to ensure the proper functionality of the measuring and manufacturing instruments. Usually the instrument calibration is done in a manufacturing plant as a part of regular maintenance. All the instruments used in a manufacturing process such as the calipers, oscilloscopes etc will have standard points which will be used as reference points. All the other measurements will be entirely based on these standard points. Any slight deviation in these standard points will lead to a complete failure of the final product. This is where the instrument calibration comes in handy. The instrument calibration makes sure that the standard point remains in the accurate position. This is done through a serious of tests which takes long hours and so usually the instrument calibration is done once in six months when the manufacturing unit will be completely shut down.

Another great importance of instrument calibration is to ensure a continuous work flow. As the instruments will be tested and certified for proper functionality, you dont have to fear about the project getting stopped in the midway. Hence instrument calibration plays an important role in getting a continuous work flow. Without instrument calibration it is merely impossible to run a manufacturing plant with great profits.

Most importantly, instrument calibration is legally mandatory for any manufacturing plant. Though the small manufacturing units are exempted from this, calibrating the instruments will help in getting certification such as the ISO. If you are running a huge manufacturing plant which manufactures consumer products such as the cars, instrument calibration is mandatory. If you ignore this, your manufacturing plant will fall into legal issues.

Apart from the above mentioned necessities of instrument calibration there is one most important need of it. Without instrument calibration, you cannot manufacture quality products that will satisfy the clients. Hence you have to do instrument calibration atleast once a year to ensure the quality of the products manufactured in the plant and build reputation worldwide.

These are only a few of the bunch of benefits that can be obtained with instrument calibration.

Instruments And Methods For Pressure And Flow Calibration

Instruments And Methods For Pressure And Flow Calibration

Pressure is an important process variable because it sets critical conditions for boiling, chemical reactions, distillation, extrusion, vacuuming, and conditioning of air. Incorrect pressure or flow rate can cause major safety, quality, and productivity problems. Very high pressure or flow rate inside a sealed environment can also cause an explosion. In order to ensure that plants operate efficiently and safely, periodic calibration of pressure, level, and flow instruments is required.

Many factories and metrology laboratories use various pressure and flow-meter calibration instruments. This high-accuracy equipment is used to calibrate industrial devices like pressure transducers, pressure gauges, and transmitters, as well as instruments that measure and control flow.

Some of the important types of devices used with pressure calibrators are:

1) Pressure gauges: They are instruments used to measure pressure in liquids and gases. Some of the commonly used pressure gauges are glycerin gauges, electric contact gauges, differential gauges, test gauges and capsule gauges. These are usually used in commercial production plants.

2) Calibration standard pressure sensors: These pressure sensors, usually consisting of differential pressure manometers, gauges, pressure controller, transmitters, and vacuum gauges are very precise and are sometimes used in calibration standard labs for secondary reference.

3) Pneumatic calibration hand pumps: These pressure calibrators manually produce air pressure set points. Then, these are used to calibrate pressure equipment with the help of a pressure indicator.

4) Pressure calibrators utilizing electrical measurement: These measure electrical current as well as voltage in order to show the output signal produced by a pressure transducer.

5) Digital test gauges: These gauges are installed on both hydraulic and pneumatic calibration hand pumps to determine pressures with precision.

6) Precision manometers: These pressure calibrators are handheld instruments, which provide a selection of pressure units. They are powered by batteries.

7) High pressure calibration hand pumps: These instruments produce pressure in order to calibrate a test gauge or connect to an indicator.

For any transducers or measurement systems, which provide information on the amount of material transferred in a given time, flow meter calibration is necessary. In flow-meter calibration, measurements usually occur in units of mass per unit time (gravimetric measurement) or volume per unit time (volumetric measurement). These two types of measurements relate to one another by the density (mass per unit volume) of the flowing material. This third method is called comparison measurement.

Off-shore Instrument Technicians 4 Things You Should Know

Off-shore Instrument Technicians 4 Things You Should Know

Off-shore oil rigs are huge and as such need many people to keep things running efficiently. Among these, instrument technicians are some of the most in demand. Because the rig is in the middle of the sea, the salt in the water and air will damage the electrical, pneumatic and mechanical systems. This is where off-shore instrument technicians come in as without them oil rigs would not be able to function.

Job description

*As an instrument technician, you would have to install new machinery and equipment, maintain and monitor them and make sure they are in working order. For this, daily inspection has to be done to make sure there are no glitches.

Remuneration

*Off-shore jobs are very challenging and so remuneration is very good. Everyone on the rig – from the roustabouts to the technicians and supervisors – follows the same routine of 12-hour shifts, 7 to 14 days in a stretch and the same number of days off. On an average, instrument technicians get about $61,000 a year but this amount can differ from company to company. Job location and your experience level will also be factors.

Dangers

*While working on an off-shore oil rig, you will have to brave extreme weather and face the potential dangers of hurricanes and storms, and the fact that accidents, sometimes fatal ones, are more than a possibility. As an instrument technician, there is the added danger that you could get injured by the machinery or chemicals you have to handle.

Qualifications

*Instrument technicians must have a high school diploma and a degree in instrumentation or process technology, or an equivalent certificate/diploma from a recognized organization. If you don’t have the relevant qualifications, it would be a good idea to attend a two-year instrumentation technical course before applying. You will need to be a team player as most instrument technicians work in groups. You also must be able to troubleshoot and breakdown a problem logically so that you can solve it.

Though off-shore instrument technician jobs are in demand, they are difficult to get as they need a lot of technical skill and qualifications. At the end of the day, living on a rig can wear you down mentally and physically but if you feel you can handle the harsh environment, then go for it. But remember, that once you get the job, it doesn’t stop there: you have to keep learning, reading and updating yourself on new technologies.