mode of excitation
71Molecular vibration — A molecular vibration occurs when atoms in a molecule are in periodic motion while the molecule as a whole has constant translational and rotational motion. The frequency of the periodic motion is known as a vibration frequency, and the typical… …
72Rotational spectroscopy — Part of the rotational vibrational spectrum of carbon monoxide (CO) gas (from FTIR), showing the presence of P and R branches. Frequency is on the x axis, and absorbance on the y axis. Rotational spectroscopy or microwave spectroscopy studies the …
73SUBLIMATION — Invoquer la « capacité de sublimation » pour expliquer en quoi tel individu a échappé à la névrose, comment tel grand homme s’est trouvé produire telle œuvre géniale, n’est ce point une façon bien dérisoire de répéter la question du pourquoi de… …
74Darmstadtium — meitnerium ← darmstadtium → roentgenium Pt ↑ Ds ↓ (Uhn) …
75Raman spectroscopy — Energy level diagram showing the states involved in Raman signal. The line thickness is roughly proportional to the signal strength from the different transitions. Raman spectroscopy (   …
76Plate reader — Microplate Readers (also known as Plate readers) are laboratory instruments designed to detect biological, chemical or physical events of samples in microtiter plates. They are widely used in research, drug discovery, bioassay validation, quality …
77Molecular geometry — Geometry of the water molecule Molecular geometry or molecular structure is the three dimensional arrangement of the atoms that constitute a molecule. It determines several properties of a substance including its reactivity, polarity, phase of… …
78Trip distribution — (or destination choice or zonal interchange analysis), is the second component (after trip generation, but before mode choice and route assignment) in the traditional four step transportation forecasting model. This step matches tripmakers’… …
79Guillotine — La guillotine est une machine de conception française, inspirée d’anciens modèles de machines à décollation, et qui fut utilisée en France pour l’application officielle de la peine de mort par décapitation, puis dans certains cantons de Suisse,… …
80Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
