Why a particular element should have a unique emission spectrum? (a) Explain why hydrogen burning usually only takes place in the core of the star, instead of the outer layers. (b) Explain briefly why a star bu
Why a particular element should have a unique emission spectrum? Why do quantum effects only happen on the atomic scale? Why is the photoelectric cell also called an electric eye? Why infrared radiations are used for signals during the war? Why do the most luminous stars end their lives...
People often rely for this on empirical rules that they have learnt with experience, as there is no clear correlation be- tween the stability of a protein and its intrinsic properties (amino acid composition, isoelectric point, secondary structure elements, …). Recent DLS instrumental develop- ...
In our panel of cultivars, we showed that there is not one and unique rose scent but different perceptual representations depending on the variety of the rose. Interestingly, the rosy perception was positively correlated to pleasantness, attractivity, and familiarity. This reveals that the rosy ...
Why a particular element should have a unique emission spectrum? 1. Why is the ionization energy of helium greater than that of the other elements? Helium is very common in the Sun and calcium is rare. Why are helium lines weak and calcium li...
Why do we have a mass hierarchy of leptons and quarks? What is molecular emission and absorption? Why a particular element should have a unique emission spectrum? Explain how an x-ray tube can take an electron and turn it into an x-ray. Explain the entire proces...
Why are no two emission spectra for different elements ever the same? Why are gases and liquids considered fluids? Why are cathode rays from all samples of gases identical, whereas canal rays are not? Why do liquids have a vapor pressure? State 4 reasons why air is classified as a ...