Lesson Summary. Infrared waves are just part of the electromagnetic spectrum; to be exact, they're waves that have a wavelength between 700 nm (nanometers) and 1 mm. This can't quite be detected by human eyes-it is just beyond the red side of the rainbow.esson Summary. Infrared waves are just part of the electromagnetic spectrum; to be exact, they're waves that have a wavelength between 700 nm (nanometers) and 1 mm. This can't quite be detected by human eyes-it is just beyond the red side of the rainbow.
Also called split rail or post and rail, a ranch-style vinyl fence with two to four rails typically costs do-it-yourselfers $4-$12 a linear foot for materials; with a gate and other options do-it-yourself materials can total $500-$1,400 for 100' of fencing and $3,500-$10,000 to enclose a simple square acre (about 830').
1 If the fence encloses a driveway, an ornamental driveway gate can cost $1,400-$9,000, depending on whether it's manual or automatic. 2  Wrought-Iron-style fence panels are available from home improvement centers like Home Depot and Lowe's. With professional installation, the total cost for labor and materials for wrought iron fence panels can be $30-$300 or more per foot, depending on local rates and the height, style and complexity of the installation (installing metal fencing on a slope costs more).