Skin layers and melanin. Sunburns are caused by exposure to too much ultraviolet (UV) light. UV radiation is a wavelength of sunlight in a range too short for the human eye to see. Ultraviolet A (UVA) and ultraviolet B (UVB) are the two types of solar radiation most responsible for sunburn.Sunlamps and tanning beds also produce UV light and can cause sunburn. Melanin is the dark pigment in the outer layer of skin (epidermis) that gives your skin its normal color.When you're exposed to UV light, your body protects itself by accelerating the production of melanin.ltraviolet A (UVA) and ultraviolet B (UVB) are the two types of solar radiation most responsible for sunburn. Sunlamps and tanning beds also produce UV light and can cause sunburn. Melanin is the dark pigment in the outer layer of skin (epidermis) that gives your skin its normal color.
Anecdotal Records (Observations) An anecdote is an account of an event in a childâs day. The record of this event can be detailed or brief. These short. reports describe, in a factual way, the incident, its context, and what was said or done by the participant(s). In most cases,
Anecdotal evidence is not necessarily representative of a typical experience; in fact, human cognitive biases such as confirmation bias mean that exceptional or confirmatory anecdotes are much more likely to be remembered.Accurate determination of whether an anecdote is typical requires statistical evidence.he term is often used in contrast to scientific evidence, such as evidence-based medicine, which are types of formal accounts. Some anecdotal evidence does not qualify as scientific evidence because its nature prevents it from being investigated using the scientific method.