| 1 | Sometimes it can take years to sort out these Doppler observations. | |
| 2 | Imagine now you can make the Doppler shift measurements of both stars. | |
| 3 | In this case, your baby' s heart rate will be checked periodically with a Doppler. | |
| 4 | But you will not be able to measure the Doppler shift of the black hole-- no pulsations. | |
| 5 | Five Doppler radars along the east coast detect storms building up within 300 - 400 kilometres. |