Chapter 10 Introduction to Vectors and Transformation Geometry

ပထမဆံုးထေα€”α€”ဲα‚” Maths portion α€€ို တင္ေပးα€œိုα€€္ပါα€α€š္။

Chapter (10) - Introduction to Vectors and Transformation Geometry

ကၽြα€”္ေတာ္တိုα‚” ေα€”α‚”α€…α€₯္α‚€α€€ံဳေတြα‚• ရတဲ့ physical quantity ေတြα€™ွာ scalar quantity α€”ဲα‚” vector quantity α€›α€š္ဆိုၿပီး ႏွα€…္α€™်ိဳး႐ွိပါα€α€š္။


Scalar quantity ေတြα€™ွာα€€ ထတိုင္းထတာ (magnitude) α€žာ႐ွိပါα€α€š္။ Vector quantity ေတြα€™ွာေတာ့ ထတိုင္းထတာα€”ဲα‚” α€₯ီးα€α€Š္α€›ာ (magnitude and direction) α€›α€š္ဆိုၿပီးႏွα€…္α€™်ိဳး႐ွိပါα€α€š္။

A scalar is a simple physical quantity that is not changed by coordinate system rotations or translations(defined by Wikipedia)
Examples of scalar quantities
* electric charge and charge density
* mass and mass density
* speed, but not velocity or momentum
* temperature
* energy and energy density
* time
* pressure
* entropy
* negentropy

In elementary mathematics, physics, and engineering, a vector (sometimes called a geometric or spatial vector) is a geometric object that has both a magnitude (or length), direction and sense that is orientation along the given direction. A vector is frequently represented by a line segment with a definite direction, or graphically as an arrow, connecting an initial point A with a terminal point B, and denoted by


ထတိုင္းထတာဆိုတာα€€ α€‘α€œြα€š္တကူ α€žိα€žာထင္႐ွားα€…ြာ ေတြα‚•ျမင္ႏိုင္ပါα€α€š္။ α€žိုα‚”ေα€žာ္ ထခ်ိဳα‚•ေα€žာ quantity ေတြα€™ွာ ထတိုင္းထတာပမာဏ (magnitude) ေျပာင္းα€œဲျခင္းမ႐ွိေα€žာ္α€œα€Š္း α€₯ီးα€α€Š္α€›ာေျပာင္းα€œα€Š္း α€™ႈေၾကာင့္ α€›α€œα€’္ေတြ ေျပာင္းα€œဲပါα€α€š္။

ထဲα€’ါေတြα€€ေတာ့ vector quantity ေတြပဲျα€–α€…္ပါα€α€š္။ vector quantity ေတြα€€ို resolve α€œုပ္α€–ိုα‚” geometry α€€ိုα€‘α€žံုးခ် ေျဖ႐ွင္းႏိုင္ပါα€α€š္။

α€’ီထခန္းα€€ေတာ့ vector α€›ဲ့ base concept and theory α€€ို စတင္α€™ိတ္ဆက္ေပးျခင္းα€žာ ျα€–α€…္ပါα€α€š္။ α€œα€€္ေတြα‚• α€‘α€žံုးခ်ေျဖ႐ွင္းα€”α€Š္းα€™်ားα€€ိုေတာ့ တကၠα€žိုα€œ္္တန္း α€™်ားα€™ွာဆက္α€œα€€္α€žα€„္ၾကားα€™ွာျα€–α€…္ပါα€α€š္။

ေα€€်ာင္းα€žား/α€žူ ထေတာ္α€™်ားα€™်ား α€’ီထခန္းα€€ို α€•α€š္ပစ္တတ္ၾကပါα€α€š္။ α€žိပၸံα€˜ာα€žာတြဲα€™်ားα€€ို တကၠα€žိုα€œ္α€™ွာ ဆက္α€œα€€္ ေα€œ့α€œာα€žα€„္α€šူα€–ိုα‚” α€›α€Š္႐ြα€š္ထားရင္ (α€žα€„္ခၤ်ာ α€˜ာα€žာရပ္ႏွင့္ မကင္းα€€ြာα€žေ႐ြα‚•) α€’ီထခန္းα€€ို ထထူးα€žိ႐ွိα€”ားα€œα€Š္ထားα€–ိုα‚” α€œိုထပ္ပါေၾကာင္း ထႀကံျပဳပါα€›ေα€…။

ပထမα€₯ီးဆံုးထေα€”α€”ဲα‚” Section (10.1) Geometric vectors α€›ဲ့ α€”ားα€œα€Š္ထားα€›α€™α€š့္ definition α€™်ားα€”ဲα‚” ႐ွင္းα€œα€„္းခ်α€€္α€™်ား၊ ပုုα€…ၧာထခ်ိဳα‚”α‚• ႏွင့္ ေျဖ႐ွင္းပံုα€™်ား (Problems and Answers) α€™်ားα€€ို တင္ျပေပးα€œိုα€€္ပါα€α€š္။

α€€်α€”္႐ွိေနတဲ့ section α€œα€Š္းဆက္α€œα€€္ တင္ေပးα€žြားပါ့α€™α€š္။ ေα€€်ာင္းα€žားα€žူα€™်ားထားα€œံု ထူးခၽြα€”္ထက္ျα€™α€€္α€…ြာ α€˜α€α€•α€”္းတိုင္ထဆင့္ဆင့္α€€ို ေα€€်ာ္α€œြα€”္ ျဖတ္α€žα€”္းႏိုင္ပါေα€…။

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α€…ာဖတ်α€žူ၏ ထမြင်α€€ို α€œေးα€…ားα€…ွာα€…ောင့်α€™ျှော်α€œျα€€်!

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