https://phys.org/news/2017-08-transmission-terahertz-multiplexer.html
Roderick Beck
Director of Global Sales
United Cable Company
DRG Undersea Consulting
Affiliate Member
www.unitedcablecompany.com<http://www.unitedcablecompany.com>
85 Király utca, 1077 Budapest
rod.beck@unitedcablecompany.com
36-30-859-5144
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Good for a few meters at best? Terahertz is blocked by air.
-Dan
Turn up the Tx power a bit and you'll have a nice little heater too.
Matt Freitag
Network Engineer
Information Technology
Michigan Technological University
(906) 487-3696 <%28906%29%20487-3696>
https://www.mtu.edu/
https://www.mtu.edu/it
The higher the frequency, the more it acts like light. at that frequency,
it wouldn't take much to block it. even 2.4GHz is stopped by a tree.
I had my suspicions. 
2.4GHz is only stopped by a tree because the FCC EIRP limit for point to
multipoint gear is 4 watts or 36dbm. If you turn the power up high enough
2.4GHz will easily go through trees and other objects. It's a regulatory
limit, not a physics limit 
-Sean
So you're saying, with enough power, line of sight will be cleared...at least of any organic obstacles? 
Never has the phrase "It burns when IP" been more accurate.