electromagnetic spectrum Flashcards
Armstrong range for x rays
less than 0.1 Å
Armstrong range for UV rays
0.1Å - 100Å
Armstrong range for vibgyor
100 Å - 4000 Å
Armstrong range for infrared rays
4000 Å - 8000 Å
Armstrong range for microwaves
10^7 Å - 10^11 Å
Armstrong range for radio waves
greater than 10^11 Å
the relation between energy and wavelength
inversely proportional.
uses of gamma rays
- -> treatment of cancer and tumors
- -> used for the study of the nucleus (high penetrating power)
uses of x rays
- -> detection of fractures
- -> study of atomic crystal
uses of ultraviolet radiation
- -> sterilizing purpose of chemically active AgCl
- -> killing bacteria
which prism is used in ultraviolet radiation
quartz prism
which prism is used for infrared rays
rock salt prism
uses of infrared rays
- -> photography at night and in fogs
- -> used for sending signals in war
properties of infrared rays
- -> scatter least
- -> travels undeviated for long distances
radiations which are detected by the thermopile
infrared rays
what is the speed of all the electromagnetic rays
3.8 x 10^8 m/s
the relation between frequency and wavelength
inversely proportional
which electromagnetic radiation has the highest frequency
gamma rays
which color scatter most
violet
which color scatters least
red
wavelength and scattering relation
inversely proportional
what is rayleigh’s law
scattering of a particle is inversely proportional to lambda of the particle raised to the power of 4
