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  • Scholar Asked on October 4, 2018 in MUSICAL ARTS.

    We’ll place the first finger of our right had on middle C, the second finger on D and so on respectively in this exercise like we will do in most E.D exercises .

    What we’re going to do is walk in steps up and down while producing the different dynamic signs.

    Every E.D exercise should be first practised in four steps:
    1. Playing only with the right hand
    2.Playing with the the left hand
    3. Playing in counter movement (both thumbs should be placed on middle C while we move with the same fingers in the opposite directions)
    4. Playing with parallel movement.

    When you practice the exercise in the parallel movement, place the first finger of the right hand on middle C and the fifth finger of the left hand on the lower C.

    The hands are supposed to play the same notes when moving in the same direction but you’ll be pressing different fingers in each hand.

    Start with falling fast with the first finger of the right hand in order to produce a forte sound. Use the whole arm while you fall in order to produce more volume.
    Make sure you release the hand once you fell to the key.
    Remember, there is no use to hold hand in tension since you can’t control the volume once you fell to the piano key.
    Try to produce forte and legato together afterwards.
    Instead of activating the weight of the whole arm, try this time to let only your fingers fall to the key while you keep your wrist on the correct position (with out activating any tension).

    Perform the exercise with your left hand at the same way, then do it in the counter movement and the parallel movement.

    Now try to repeat the whole exercise, buy instead of playing music Forte, fall slowly to the key this time in order to produce a soft piano sound.
    Try to sink into the piano key instead of dropping to it quickly .
    Remember to keep on a descent level of volume even when you play piano so that other listeners could hear you as well.

    When playing piano you have to often divide your attention between both hands.
    The right hand often plays the melody while the left hand accompanies. The melody has to naturally be stronger then the accompaniment.
    Try to perform the same E.D exercise but this time play music forte in the right hand and piano in the left hand as you ascend from C to G.
    So the right hand should be falling to the key faster then the left hand which has to sink to the key more slowly.
    Switch directions when descending from G to C. This time let the left hand play forte while you sink with the right hand more slowly in order to produce piano at the same time.

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  • This metal is softer than iron but harder than zinc. It can be polished to impart a brighter finish. It is placed in group 11 of the periodic table with silver and gold. It has a very low chemical reactivity, and dissolves in hot concentrated hydrochloric or sulfuric acid. It gets corroded by salt water and forms a chloride.

    An ancient metal like copper was used to make ornaments, coins, utensils, statues, etc. It is ductile, and has a high thermal and electrical conductivity. It is denoted with the symbol ‘Cu’. It has been used for over a thousand years, and was first mined in Cyrus during the Roman era. This gave rise to its name ‘Cyprium’, and is also called ‘metal of Cyprus’. It was discovered in ancient times in a native form, thus giving rise to the ‘Copper Age’ after the ‘Stone Age’.

    The melting point of this element is 1357.77° K, 1084.62° C, or 1984.32° F. Pure copper and high copper content alloys are very difficult to melt. It is also susceptible of gassing. When copper chromium is melted, it leads to a loss of ‘Cr’. This problem is solved by melting this compound under a floating flux that prevents oxidation, and it also picks up hydrogen from the atmosphere. When the molten metal reaches 1260° C, calcium boride or lithium is plunged into the molten bath that helps in deoxidizing it.

    Copper Carbonate
    This compound is found in weathered brass, copper, and bronze. You can easily identify it with its bright blue to green color. Copper in moist air oxidizes to a dull green color, and therefore is used by architects to create some interesting features on buildings. The melting point of copper carbonate is 200° C. At a high temperature, copper carbonate decomposes to carbon dioxide and copper (II) oxide.

    CuCO3 (solid) → CuO (solid) + CO2 (gas)

    Copper Alloys
    These are divided into three groups according to their freezing range. The solidification of these alloys occur when the temperatures drops below liquidus (temperature at which metals begin to freeze), and is completed before the temperature reaches solidus (temperature at which metal is completely frozen). Speculum metal and bronze are some alloys of copper and tin, which have a melting point of 1900° – 1950° F. Brass is an alloy of copper and zinc, and has a melting point of 900° – 940° C.

    Thus, all the properties of copper that are described above, especially in relation to its melting point, are very important in different fields of chemistry and metallurgy.

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  • Scholar Asked on April 12, 2018 in COMPUTER ENGINEERING.

    A constructors and destructors are methods defined in a class that are invoked automatically when an object is created or destroyed. They are used to initialize a newly allocated object and to cleanup behind an object about to be removed.

    • 190 views
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  • Scholar Asked on April 12, 2018 in COMPUTER ENGINEERING.

    An object’s message protocol is the exact form of the set of messages to which the object can respond.

    • 187 views
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  • Scholar Asked on April 12, 2018 in COMPUTER ENGINEERING.

    Inheritance is property such that a parent (or super) class passes the characteristics of itself to children (or sub) classes that are derived from it. The sub-class has the option of modifying these characteristics in order to make a different but fundamentally related class from the super-class.

    • 210 views
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  • Scholar Asked on April 12, 2018 in COMPUTER ENGINEERING.

    Inheritance is property such that a parent (or super) class passes the characteristics of itself to children (or sub) classes that are derived from it. The sub-class has the option of modifying these characteristics in order to make a different but fundamentally related class from the super-class.

    • 208 views
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  • Scholar Asked on April 12, 2018 in COMPUTER ENGINEERING.

    An individual object that is a member of some class.

    • 208 views
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  • Scholar Asked on April 6, 2018 in COMPUTER ENGINEERING.

    Validation checks if the product is made as per user requirements whereas verification checks if proper steps are followed to develop the product.

    • 190 views
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  • Scholar Asked on April 6, 2018 in COMPUTER ENGINEERING.

    Requirements can be gathered from users via interviews, surveys, task analysis, brainstorming, domain analysis, prototyping, studying existing usable version of software, and by observation.

    • 200 views
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  • Change control is function of configuration management, which ensures that all changes made to software system are consistent and made as per organizational rules and regulations.

    • 219 views
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