x-ray

[pdeluca]

Is it true that specific x-ray can see through a wall?

[chrisbailey]

X-rays are unlike light rays as they can travel through solid objects, although they do have difficulty travelling through dense objects like lead. Technically you could use X-rays to "see" through a wall, yes.

[Paul---G]

Have a look at this site.......... Looks like we cannot at tyet see through walls with x-ray, but radio pulses may be used soon to cover this idea....... http://www.xenophilia.com/str_technology.htm ........ Its the second from last section.........