Part I of this review highlights key historical high points of the research odyssey that cracked the longevity code and provides the reader with a backstage pass to meet the enzymes encoded by SIRT1âthe seven nutrient-responsive NAD+-dependent histone deacetylase enzymes, dubbed the sirtuins.
To calculate the wavelength of a radio wave, you will be using the equation: Speed of a wave = wavelength X frequency. Since radio waves are electromagnetic waves and travel at 2.997 X 10^8 meters/second, then you will need to know the frequency of the radio wave. If the radio wave is on an FM station, these are in Megahertz.
1 10 cm = 1.0 dm â wavelength of the highest UHF radio frequency, 3 GHz. 2  12 cm = 1.2 dm â wavelength of the 2.45 GHz ISM radio band. 3  21 cm = 2.1 dm â wavelength of the 1.4 GHz hydrogen emission line, a hyperfine transition of the hydrogen atom.