I think they use frequency modulated sound waves rather than electromagnetic waves as to be honest i cant think of an em wave that would work.
Steel-reinforced concrete
to control the radiation
The molecules inside the steel move around less and this pulls them together causing them to shrink in size
It depends on the concrete and the type of radiation. If the concrete is feet thick, then it should only pass through the very surface and stop dead in it's tracks mid-way through the concrete. Recap: Yes, but if the concrete is long/wide enough, it will not pass through completely.
Geiger counters have gas in them that does not normally conduct electricity. When ionizing radiation passes into a Geiger counter, it makes the gas conductive, and the conductivity can be measured, indicating that the radiation is present. Gamma rays, which have no charge, can be measured by interacting with lead or steel in a Geiger counter, putting electrons into the gas.
Gamma radiation is best because it is it is very penetrative so therefor is absorbed by the steel whereas beta and alpha radiation aren't penetrative enough so would be stopped by the steel structure.
Electromagnetic radiations
When photons collide with any matter, the radiation attenuates and energy is released as heat. There is variation in the ability of an electromagnetic wave to travel in a given medium, and its ability varies with the nature of the medium and the frequency of the electromagnetic wave. We know that we can see through window glass and clear acrylic plastic. But we can't see through a brick wall or a block of steel.
black steel
The steel ship has a lot of air inside. The nail is solid steel.
Reactors are typically made from concrete,steel and lined with lead, the combination of these materials and built into a strong shape(bullet shaped or spherical shaped etc..) make up a nuclear reactor, these materials also absorb the radiation produced inside the nuclear reactor(lead absorbs gamma radiation and concrete absorbs neutron radiation).
steel nail goes inside your body.
An iron or steel with wire wound on it turns the drive shaft.
Steel. Tin cans are really mostly steel.
the steel
Steel-reinforced concrete
* They are made of Plastic and steel inside. And sometimes the whole body is of steel.