The Lapse | Premium-rate telephone number | A Momentary Lapse of Reason Tour | Data rate units | Rate of return | Mortality rate | Erythrocyte sedimentation rate | bit rate | A Momentary Lapse of Reason | Volumetric flow rate | Total fertility rate | Time-lapse photography | sixth-rate | Heart rate | growth rate | E-Rate | Clock rate | Bit rate | Basic Rate Interface | United States cities by crime rate | Time Lapse Consortium | Third-rate | Survival rate | Sampling rate | Rate of penetration | Mutation rate | List of countries by unemployment rate | Horizontal scan rate | heart rate | Fixed interest rate loan |
A radio acoustic sounding system (RASS) is a system for measuring the atmospheric lapse rate using backscattering of radio waves from an acoustic wave front to measure the speed of sound at various heights above the ground.