- Uses for thermoelectric generators (Cm 242 and Cm 244); now these isotopes has some disadvantages. - Also for the analysis of rocks on other planets; curium is used as particle source for alpha...
Curium is very scarce and expensive; today curium has only limited applications:- isotopes 242Cm and 244Cm are used as alpha particles sources for α-spectrometers mounted on spacecraft engines to...
The only answer that comes to mind is "Airships". Hydrogen, the lightest element, was used in airships, where excess weight was undesirable. However, accidents like the Hindenburg disaster showed...