Contrary to misconceptions portrayed in the media , thermal imagers can not ' see ' through solid objects ( walls for example ) .
They imagers not see through glass or perspex as both these materials have their own thermal signature and are opaque to long wave infrared radiation .
Contrary to misconceptions portrayed in the media , thermal imagers can not ' see ' through solid objects ( walls for example ) , nor can they see through glass or perspex as both these materials have their own thermal signature and are opaque to long wave infrared radiation .