The red wavelengths of light are the longer wavelengths and the violet wavelengths of light are the shorter wavelengths. Between red and violet, there is a continuous range or spectrum of wavelengths.
The USPS also includes that a large postcard is 49 cents to mail. The maximum size for this postcard is 11 1/2 inches long, 6 1/8 inches high and 1/4 inch thick. This is the same rate to mail a First Class 1 ounce letter domestically. The rates for postage increased as of January 2014.
Postcard Postage Rate Increase In June 2015 - Ways To Reduce Your Postcard Mailing Costs. Minimum size: 5 inches long by 3.5 inches high Maximum size: 6 inches long by 4.25 inches high. Los Angeles, CA-May 29, 2015 - The cost of mailing postcards is going up.The United States Postal Service has announced a postage rate increase from 34 to 35 cents each for postcards, effective June 1, 2015.But there are ways to reduce postage costs for postcard mailings.This new rate is for postcards with these dimensions:he United States Postal Service has announced a postage rate increase from 34 to 35 cents each for postcards, effective June 1, 2015. But there are ways to reduce postage costs for postcard mailings. This new rate is for postcards with these dimensions: