the glass ceiling
There are many types of barriers of communication for example; language barrier, physical barrier, emotional barrier, listening barrier, cultural barrier, gender barrier etc
it a barrier of communication
Barrier isn't a verb it is a common noun.
Emotional barriers is the feelings that prevent you to communicate effectively. liking and disliking are included in Emotional Barrier. Both the encoder and decoder affected in emotional barrier.
Opening
Glass ceiling.
glass ceiling
glass ceiling
Get the Devon Scope.
Refraction.
the wave will bend or defract
colourful,beatiful
Yes, yes it will
Allopatric Speciation
Allopatric Speciation
The invisible barrier that exist when highly skilled women are continually denied promotions of high level position in an industry dominated by men is called the glass ceiling
If you mean the "zipper lane" highway barrier machines, the ones I've seen were built by the Barrier Systems division of Lindsay Corporation. They have been around for a long time now, so there are probably more makers out there.