HOTNESS-SCIENCE BLOG INTRODUCTION We term heat as energy of hotness, it makes  the object hot . We feel cold in winter, specially inside the room. But when we go outside in front of sunrays, then we feel  warm.   We term the temperature as the measurement of degree of hotness  or coldness.  This property indicates whether…

LENS FORMULA INTRODUCTION It is a transparent refracting medium bounded by  two or at least one spherically curved surface in lens formula.  What is lens using in various device :In a microscope or in a telescope convex lenses are used to see distant or much closer objects. What is the type: Convex and Concave lens. What is…