THULABHARAM 4 Continued from part3
Re- posted after editing and updatinginformation. Gopalakrishnan dated 8-10-21 21. Milligram scale Milligramscales are typical used for drug dealing, industrial, research, chemical,pharmaceutical, electronics, precious metals, jewellery, and educationalapplications. 22. Analytical balance An analytical balance is used to measuremass to a very high degree of precision and accuracy. The measuring pan(s) of a high precision (0.1 mg orbetter) analytical balance are inside a transparent enclosure with doors sothat dust does not collect and so any air currents in the room do not affectthe balance's operation. Analyticalprecision is achieved by maintaining a constant load on the balance beam, bysubtracting mass on the same side of the beam to which the sample is added. 23. Spring scale Ina typical spring scale, the spring stretches in proportion to how hard theEarth pulls down on the object. It is therefore affected by the local gravity. By Hooke's law, every spring has aproportionality constant that relates how hard it is pulled to how far itstretches. Someweighing scales such as a Jolly balance (named after Philipp von Jolly whoinvented the balance about 1874) use a spring with a known spring constant (seeHooke's law) and measure the displacement of the spring by any variety ofmechanisms to produce an estimate of the gravitational force applied by theobject, which can be simply hung from the spring or set on a pivot and bearingplatform. RACK AND PINION MECHANISMS are often usedto convert the linear spring motion to a dial reading. Springscales measure weight, or more precisely, the tension force of constraintacting on an object, opposing the force of gravity. Thehooks law in summary states, the spring constant is depend on the quality ofspring material. Hence IF OVER WEIGHT IS WEIGHED, SPRING MAY EXPAND MORE ANDWILL NOT CONTRACT and scale may not show 0 point . I will continue in nextposting 24. Hydraulic or pneumatic scale Itis also common in high-capacity applications such as crane scales to usehydraulic force to sense weight. The test force is applied to a piston ordiaphragm and transmitted through hydraulic lines to a dial indicator based ona Bourdon tube or electronic sensor. 25. Electronics scale Traditionalmechanical balance-beam scales intrinsically measured mass. But ordinaryelectronic scales intrinsically measure the gravitational force between thesample and the earth, i.e. the weight of the sample, which varies withlocation. So such a scale has to be re-calibrated after installation, for thatspecific location, in order to obtain an accurate indication of mass. 26. Supermarket/retail scale Thesescales are used in the bakery, delicatessen, seafood, meat, produce, and otherperishable departments. Supermarket scales can print labels and receipts (inbakery specially), marks weight/count, unit price, total price and in somecases tare, a supermarket label prints weight/count, unit price and totalprice. Somemodern supermarket scales print an RFID tag that can be used to track the itemfor tampering or returns. In most cases these types of scales have a sealedcalibration so that the reading on the display is correct and cannot betampered with 27. Bath room scale mechanical Herethe pressure on a helical spring is extended on a needle and it reads over adial. Sometimes the dial could be made to move on a base than the needle. 28. Some of the sources of error inhigh-precision balances or scales are: Buoyancy, because the object being weighed displaces a certainamount of air, which must be accounted for. Some high-precision balances may be operated in a vacuum. Errorin mass of reference weight Air gusts, even small ones, which push thescale up or down Friction in the moving components thatcause the scale to reach equilibrium at adifferent configuration than a frictionless equilibrium should occur. Settling airborne dust contributing to the weight Mis-calibration over time, due to drift inthe circuit's accuracy, or temperaturechange 29. Symbolism of scale The scales (specifically, a two pans, beambalance) are one of the traditional symbols of justice, as wielded by statuesof Lady Justice. This corresponds tothe use in metaphor of matters being "held in the balance". It hasits origins in ancient Egypt. A doubt arose with me about balance incourts behind judge. If in the lower court judgement is given as per scale, whythere are upper courts? I came to the conclusion we are humans with two qualities- doubt anddissatisfaction. Hence the upper courts. Nowwhether used in Tulabharam or not the hanging scale in the temple slightly to one side gives the God giving intimation- I will grantwhat is justified with a small addition. You may pray for anything.I will never say no. But do not expect all that you want will be given.Justified will be given by mewith a mun thookkam (slightly more) 30 Manakkanakku Ido not know what software in brain make it work, a normal person can tell theweight of an item with 80 % accuracy when it is between 500 grams to 2 kg. Probably information of such weights beingfrequently handled a scale would have been formed in the brain. Itis not only for weight, but for volume, length or breadth also. Many could justsee the size of a room and tell the area. Not looking in to tile size etc. 31 Missing balance story Iwill complete this posting with the laughing incident of a merchant. Themerchant was ready to go over to the market in the morning with the items andbalance arranged in the previous night itself keeping it over the basket. Thewife desired to purchase a few items from the market. Merchant said, he would getthem provided there was good value for the products. Ourlady does not relish it. She could not relate between good value and meetingher requirement. Shesimply took and hide his scale (Thras) after he went to sleep just below hisbasket which could not be seen by him. Morningmerchant found thras missing and awakened his wife after a though search. She pretended as in deep sleep. Timewas passing. Finally he felt something fishy. He used is tactic. I was thinkingcostlier items for you after sale in coming market days also. Wifehearing it got up. She started searching here and there as if she did not hide.Finally took it from BELOW HIS BASKET ITSELF where it was hidden, which she wassure, he might not search. Endof the story- She got better items than what she demanded on that day itselfthough sale was not so profitable. -- You received this message because you are subscribed to the Google Groups "Thatha_Patty" group. To unsubscribe from this group and stop receiving emails from it, send an email to thatha_patty+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/thatha_patty/1676555328.326432.1633650821784%40mail.yahoo.com.
