14 days. of rain. Singapore's total amount of rain for April has varied over the years from 18 inches (455 mm) to less than an inch (17 mm). Usually the day's heaviest rainfall this time of year occurs around 5 pm.Sunlight in April at Singapore lasts for 12 hours and 8 minutes a day on average.That amounts to 364 hours of daylight for the month. The relative humidity in Singapore during April ranges throughout the day from an average maximum of 97 percent to an average minimum of 63 percent.ingapore's total amount of rain for April has varied over the years from 18 inches (455 mm) to less than an inch (17 mm).
1 An example of light energy is the movement of a radio signal. 2  An example of light energy is the energy in the brain that transmits signals for movement, memory, speech and hearing.
X-rays can be produced by a high-speed collision between an electron and a proton. Light can take on many forms. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light. The energy of the photon tells what kind of light it is. Radio waves are composed of low energy photons. Optical photons--the only photons perceived by the human eye--are a million times more energetic than the typical radio photon.