All steam museums and engineering departments of universities have a working steam engine – and may have access to a Geiger counter.
A working expensive steam engine (and they all are now) have access to a working steam engine, they can take a Geiger counter reading from.
Steam in turbulent flow does Molecular Nuclear Fusion
1 H2O+O2+Tu ->He+E2+L+X-ray+O3
Our nose can detect the ozone, and our counter can measure the X-rays. Careful gas analysis shows the presence of He – of which there is no chemical source: also for X-rays.
So we have just proved Molecular Nuclear Fusion goes off on Earth at 120oC. A steam plasma tube also does Molecular Nuclear Fusion.
A 50x1cm steam plasma tube will happily run a water boiler, to generate over 120 kW. That will produce an annual income of 3.6 million. And take 140 people off Fossil Fuels mains power.
No toxic radioactive waste: but all operating U nuclear plants need 100 billion of insurance. No commercial insurance above 1 billion is available. Get my e-book