The human hearing mechanism begins with the tympanic membrane transferring vibrational motion through the middle-ear's mechanical system three bones ( malleus, incus and stapes ) into the cochlea where hair-like nerve cells convert the vibrational motion stimulus into nerve impulses.
22.
The human hearing mechanism begins with the tympanic membrane transferring vibrational motion through the middle-ear's mechanical system three bones ( malleus, incus and stapes ) into the cochlea where hair-like nerve cells convert the vibrational motion stimulus into nerve impulses.
23.
Temperature, on the other hand, has a known minimum, absolute zero ( where all vibrational motion of atoms ceases ), and therefore, can be measured either in absolute terms ( kelvins or Reaumur ) or the lowest temperature attainable in 1724 ( Fahrenheit ).
24.
Lord is considered a pioneer in the use of Infrared radiation for the study of molecular structure and is widely recognized for contributions made to the interpretation of the infrared spectra of molecules in terms of their vibrational motion, and also to our understanding of the cohesion of molecule by means of hydrogen bonding.
25.
The energy released in this transition may be emitted as a photon ( spontaneous emission ), however in practice the 3?! 2 transition ( labeled "'R "'in the diagram ) is usually " radiationless ", with the energy being transferred to vibrational motion ( heat ) of the host material surrounding the atoms, without the generation of a photon.
26.
As an example, for diatomic gases, the critical temperature for the vibrational motion is usually a few thousands of kelvins, and thus for the nitrogen in our example at room temperature, no vibration modes would be excited, and the constant-volume heat capacity at room temperature is ( 5 / 2 ) " R " / mole, not ( 7 / 2 ) " R " / mole.
