ABSORPTANCE

                         ABSORPTANCE

The ratio of the amount of radiation absorbed by a surface to the amount of radiation incident upon it.

ABSOLUTE ZERO

Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance.

Absolute zero is the point at which the fundamental particles of nature have minimal vibrational motion, retaining only quantum mechanical, zero-point energy-induced particle motion.

By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and –273.15 degrees Celsius on the Celsius scale.

Absolute zero is also precisely equivalent to; 0 degrees R on the Rankine scale (also a thermodynamic temperature scale); and –459.67 degrees F on the Fahrenheit scale.

While scientists can not fully achieve a state of “zero” heat energy in a substance, they have made great advancements in achieving temperatures ever closer to absolute zero (where matter exhibits odd quantum effects).

In 1994, the NIST achieved a record cold temperature of 700 nK (billionths of a kelvin).

In 2003, researchers at MIT eclipsed this with a new record of 450 pK (0.45 nK).                                                                                                                          

ABSOLUTE HUMIDITY

And today we gonna get to know bout Absolute zero.... we're rising from alphabetical order.

Density of moisture i.e., water vapour to per unit of volume of air, expressed usually as kilogram per cubic metre (kg/m3). In comparison, relative humidity is the ratio of the water vapour in the air at a certain temperature and pressure to the maximum water vapour it can contain at the same temperature and pressure ad specific humidity is the ratio of water vapour in the air to the total mass of air and water vapour.

PHYSICS DEFINTION

hi... its up here. hereafter I gonna update one physics definition each and every day. keep visiting my blog to get more updates...

powerful gayathri mantra.. scientifical explanations

GAYATHRI MANTRA

Om 

Bhur Bhuva Suvaha

Tat Savitur Varenyam 

Bhargo Devasya Dheemahi

Dhiyo Yonah Prachodayat

                                        MEANING

God! You are Omnipresent; Omnipotent and Almighty.

You are all light. You are all knowledge and bliss.

You are destroyer of fear; You are creator of this Universe,

You are the greatest of all. We bow and meditate upon your light.

You guide our intellect in the right direction.

  FULL SCIENTIFIC INTERPRETATION OF THE MANTRA

The earth (bhur), the plants (bhuvah), and the galaxies (suvaha) are moving at a great velocity, the sound produced is Om, (the name of formless god) That god (tat), who manifests himself in the form of light of sun (savitur) is worthy of bowing / respect (varenyam). We all, therefore, should meditate (dheemahi) upon the light (bhargo) of that deity (devasya) and also do chanting of Om. May he (yo) guide in right direction (prachodayat) our (nah) intellect (dhiyo).

 REMARK:- I learnt this from my neighbour who was a Brahmin.. then I searched more about this Gayathri mantra and tried to give you all the knowledge and the scientific interpretation that lies behind this mantra.

vAnTa blAcK

VANTA BLACK is the darkest substance of all time.. and it observes nearly 96% of light passing through it
keep visiting to get more about vanta black.. will get another post soon

SPECIAL RELATIVITY

• Special relativity is a theory proposed by Albert Einstein  that describes the propagation of matter and light at high speeds. 

• It was invented to explain the observed behaviour of electric and magnetic fields, which it beautifully reconciles into a single so-called electromagnetic field, and also to resolve a number of paradoxes that arise when considering travel at large speeds. 

• Special relativity also explains the behaviour of fast-travelling particle, including the fact that fast-travelling unstable particles appear decay more slowly than identical particles travelling more slowly. 

• Special relativity is an indispensable tool of modern physics, and its predictions have been experimentally tested time and time again without any discrepancies turning up. 
• Special relativity reduces to Newtonian mechanics in the limit of small speeds.