pylons
Pylons
Not all the towers along a transmission line are identical. Look closely at a tower where the line makes a sharp turn and you will likely find it is wider and beefier than other towers along the route. The added strength and weight are needed to resist the unbalanced pull of the conductors, which might overturn an ordinary tower. These special towers are called deviation or angle towers.
The transmission-line tower everybody knows is an Erector Set latticework of steel girders and diagonal braces. The techniques for designing and building these towers are the same ones used in constructing steel bridge trusses or crane booms. The individual pieces can be made cheaply from rolled steel and then bolted together on the site. This last point is more important than it might seem: transporting a fully assembled tower 100 feet tall is an awkward and expensive business.
Electrical pylon near Gary, Indiana
The Pylon Appreciation Society
A WebsiteIt's simple: the Pylon Appreciation Society is a club for people who appreciate electricity pylons.
Pylon of the Month
A BlogElectrical pylon in Birmingham, England.
The Evolution and Fate of Botanical Field Books
To serve as a reminder
Looking back at my notebooks now, the information seems fairly sketchy, often abbreviated, and fairly uninformative. The purpose was merely to serve as a reminder for when, that evening, I would write up my notes in a proper field book.
Sterile creatures
Now that we are in the era of personal computers, traditional field books are being replaced by computer files. By default such “field books” are sterile creatures—all the words are spelled properly, the location data are exact to a matter of a few feet, and everything is properly formatted. In the spring of 1998, I penciled my last entry into my signature field book with the bright orange cover. Thereafter I have maintained a computer-based field book.
Oh, all the right stuff is there, clear, crisp and, well, dull… I tend to be overly particular about it—the format has to be right, everything properly spelled, the descriptive sequence in the proper order, and even the observations drafted with the final publication in mind (rather than what I happen to see at the moment). The emotions of finding something new, once mentioned in my handwritten field books, are now missing, as if my mental editor says “no, that is not proper for a scientific journal.”
Further and further away
In looking over my own forty-five years of keeping a record of plant specimens, I find that I am personally moving further and further away from the words I generate, becoming more aloof and separate from the experience of the actual event of collecting, concentrating instead on the precision of where and when. It is merely record keeping for the sole purpose of giving the facts.
With the decline of letter writing and the sterilization of field books, what we are losing is the individual. Field books are like letters that are replaced by often ephemeral emails. I fear that as we move further into the computer age we will similarly lose the detailed historical record that field books once provided. Sadly, the personalities of botanists will also be lost, for such musings as might be found in a field book are often telling to those wishing to know more of the past.