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what are the characteristic of soilit is commonly conceived as a plane at right angles to the surface the upper part of a soil profile above the
state in brief about the soil horizona soil horizon may be defined as a horizontal layer of regolith approximately parallel to the soil surface
explain the term- horizonsthese processes take a long time- may be a few thousand years to create a soil as the time passes the soil matures and
explain about the soil morphology soil morphology is the description of the soil body and its general characteristics the morphology of the soil is
state the concespts of soil- pedology and edaphologyin the last two centuries of scientific study two concepts or approaches to the study of soil
why does one need to study about soil and what is its importanceyou would be aware that from the dawn of agriculture cultivators were attracted
discuss in short about soil the collection of natural bodies in the earths surface in places modified or even made by man of earthy materials
state the definition of soilthe definition of soil has changed a great deal from a thin outer layer of earths crust to a collection of natural
determine about the soil and its importanceeveryone knows about soil as a resource which fulfils the basic requirement of human kind by supporting
formation of soil evolution of earth took place five to eight billion years ago when it was a red hot magma molten rock it took millions of years for
what are the objectives of the earth pressure and retaining structuresafter knowing all concepts about the same you should be able to learna know the
what are the approaches to the design of retaining wallsthe approach to the design of retaining walls can be started as followsa chosse a trial
define the first step to envision the pattern of deformationthe first step in the analysis is to envision the pattern of deformation that would
how is retaining wall worksa retaining wall together with the backfill the wall retains and the soil that supports the wall is a highly indeterminate
what is an accommodationaccommodation is the ability of the eye to focus on an object situated at variable distances from the eye like a camera even
what are important terms in accommodation and convergenceaccommodation and convergencein this section some important terms are includeda how a person
explain about the physiological accommodation physiological accommodation contractile power of the ciliary muscle required to change the focussing
what is physical accommodationphysical accommodation is the actual physical deformation in the lens power it is measured in diopters eg if the
what are the common changes in the eye other changes in the eye are1 increase in curvature of anterior surface of lens 2 anterior pole of lens moves
jackson coleman and fischer theoryjackson coleman theory during accommodation the ciliary muscle contraction causes an anterior thrust of the
state in brief about gullstrands theorya change in the lens is controlled by the balance between elasticity of the lens capsule and the pull of
explain in brief about the ciliary muscleduring accommodation the ciliary muscle contracts and in turn the size of the ciliary ring is reduced this
what is the curvature of the lens in a human being and most other mammals the first three mechanisms are not possible and accommodation occurs by the
mechanisms of different species of animal in an animal when the need to change the focal power of the eye arises different mechanisms are there in
what is human eye accommodationthe human eye focuses at objects at infinity without exerting any power this means that when a person is observing an