The sceintifiic method
..........and is falsifiable.................
Unit 1: the electromagnetic spectrum
Astronomical information is transmitted by starrlight.
Starlight->tells us-> the star’s temperature, chemical composition, motio, pressure, magenetic fields etc.
Direct of wave motion
Wavelength: distance between 2 peaks
The EM Spectrum
Light: mutually perpendicular oscillating electric and magnetic fields.
Light: moves in a wavelike pattern at a speed of c=3x10 m/s (default meaning of lower case ‘c’ is speed
Tachyon: particles that moves faster than light (hasn’t been discovered)
Cern: neutrenoes research topic
Wavelength ‘lambda symbol’: distance between 2 peaks
Tachyons: theoretical faster-than-light particles
Wavlength-> is color
1 nanometer=1nm= m = 1x10 m = 10 m -9
Lamda red= 700nm = 700x 10 m= 7x 10 m ( YOU HAVE TO KNOW THIS)
Lamda violet= 400nm = 400x 10 m= 4x 10 m (YOU HAVE TO KNOW THIS)
Visible: ROY G BIV
Photons: bundles of energy-> lgiths as a particle
White light-broken into dofferetn colour- different colour put together =white light Short wave legnth : gamma –xrays-ultraviolet
White light VIBGYOR i