Gravity Waves. Kayak Surfing on ocean gravity waves Oregon Coast.

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Presentation transcript:

Gravity Waves

Kayak Surfing on ocean gravity waves Oregon Coast

Waves: sea & ocean waves

Sound Waves

Sound Waves:

Sound Waves

Linear Waves Sound Waves compression rarefaction

H L H L L

Phase & Group Velocity

Phase velocity Definition phase S

Phase velocity Definition phase S Definition phase-velocity

Phase velocity Definition phase S Definition phase-velocity

Group Velocity Wave-packet, Fourier Integral

Group Velocity Wave-packet, Fourier Integral Phase factor x effective amplitude

Group Velocity Wave-packet, Fourier Integral Phase factor x effective amplitude Constructive interference in integral

Doppler Effect

Shock Waves

Supernova Remnants

Tycho SNR (1572) SN1006 SNR (1006) Cas A (1680 ?) Kepler (1604) Cas A

Cas A SNR flythrough

Tsar Bomba Nuclear Explosion

Sedov-Taylor Expansion Law

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