is a material (an element, compound, or alloy) that is typically hard, opaque, shiny, and has goodelectrical and thermal conductivity. Metals are generally malleable - that is, they can be hammered or pressed permanently out of shape without breaking or cracking - as well as fusible (able to be fused or melted) and ductile (able to be drawn out into a thin wire). About 91 of the 118 elements in the periodic table are metals, the others are nonmetals or metalloids. Some elements appear in both metallic and non-metallic forms.
Astrophysicists use the term "metal" to collectively describe all elements other than hydrogen and helium, the simplest two, in a star. The star fuses smaller atoms, mostly hydrogen and helium, to make larger ones over its lifetime. In that sense, the metallicity of an object is the proportion of its matter made up of all heavier chemical elements, not just traditional metals.
a technical term in modern philosophy often used in contrast to the term subject. A subject is an observer and an object is a thing observed. For modern philosophers like Descartes, consciousness is a state of cognition that includes the subject - which can never be doubted as only it can be the one who doubts - and some object(s) that may be considered as not having real or full existence or value independent of the subject who observes it.
Metaphysical frameworks also differ in whether they consider objects exist independently of their properties and, if so, in what way.
a number, numeral, and glyph.
3, three, or III may also refer to:
• < 3 or the heart symbol, which cannot be redirected because of technical limitations.
• AD 3, the third year of the AD era
• 3 BC, the third year before the AD era
• The month of March
• An approximation of pi to the nearest integer
• An approximation of e to the nearest integer.
refers to a hole that is reamed, drilled, or milled to a specified depth without breaking through to the other side of the workpiece. The etymology is that it is not possible to see through a blind hole. Other types of holes also include through holes, and clearance holes. In this instance blind may also refer to any feature that is taken to a specific depth, more specifically referring to internally threaded hole (tapped holes).