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Ultraviolet (UV) radiation is associated with negative health effects, including sun damage and skin cancer. The purpose of this study is to compare the protective effects of the shade provided by a sun umbrella versus that provided by a tree. Sun sensors that register the level and dose of UV radiation were placed in the shade and in direct sunlight. Measurements were recorded every half hour between the hours of 12:30 p.m. and 3:00 p.m. in Sacramento, California. The results suggest that the level of UV radiation in the shade is not zero. The sensors located in tree shade indicated that over 5% of UV radiation was detected in the shade. The sensors located in sun-umbrella shade showed that greater than 17% of UV radiation reached the shade. The sun sensors used in our study collected UV radiation data relevant to UV index; however, they did not differentiate between UVA, UVB, visible, and infrared light. The amount of UV radiation detected in the shade is not zero, thus regular sunscreen use and other sun protective practices should be followed to reduce the risk of sun damage and skin cancer.
This article was published in the following journal.
Name: Dermatology online journal
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To investigate the association between shade coverage in early childhood education and care (ECEC) centres and pre-school children's physical activity, outdoor time and ultraviolet radiation (UVR) exp...
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Knowledge of when to actively modify outdoor sun protective behaviour is crucial for sun safety and should be based upon personal susceptibility to sunburn and the intensity of the ultraviolet radiati...
Use of shade when outdoors is recommended by health authorities worldwide to reduce overall exposure to ultraviolet radiation. However, expensive physical environment changes are often req...
The purpose of this study is to test how the skin of night shift workers responds to artificial sunlight (ultraviolet B radiation; UVB) at two different times of the day in comparison to n...
The purpose of this study is to evaluate the efficacy of topical products in providing protection against the visible light and ultraviolet A1 (UVA1) part of sunlight. Ultraviolet radiatio...
This study evaluates the addition of a wearable real-time UV sensor in the prevention of skin cancer development in kidney-transplant patients. Half of participants will receive a wearable...
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An injury to the skin causing erythema, tenderness, and sometimes blistering and resulting from excessive exposure to the sun. The reaction is produced by the ultraviolet radiation in sunlight.
The use of ultraviolet electromagnetic radiation in the treatment of disease, usually of the skin. This is the part of the sun's spectrum that causes sunburn and tanning. Ultraviolet A, used in PUVA, is closer to visible light and less damaging than Ultraviolet B, which is ionizing.
The process of aging due to changes in the structure and elasticity of the skin over time. It may be a part of physiological aging or it may be due to the effects of ultraviolet radiation, usually through exposure to sunlight.
Drugs that are pharmacologically inactive but when exposed to ultraviolet radiation or sunlight are converted to their active metabolite to produce a beneficial reaction affecting the diseased tissue. These compounds can be administered topically or systemically and have been used therapeutically to treat psoriasis and various types of neoplasms.
Electromagnetic radiation which does not produce ions in matter through which it passes. Its wavelengths are generally greater than those of far ultraviolet radiation and range through the longest radio waves.
There are three main types of skin cancer: basal cell carcinoma, squamous cell carcinoma and malignant melanoma. Basal cell carcinoma Basal cell carcinoma, or BCC, is a cancer of the basal cells at the bottom of the epidermis. It’s very common ...
Melanoma is a highly malignant tumor of melanin-forming cells (melanocytes) There are most commonly found in the skin (resulting from sunlight exposure), but also in the eyes and mucous membranes. Metastasis to other regions of the body is also common....