Sunlightright Svelte Project

Goal The Sunlight Right web application is intended to bring health awareness to everyone by promoting the use of vitamin D via sunlight exposure or supplementation.

Features

• Tells user how much sunlight they need in order to get a determined amount of vitamin D (International Units)
  • Using Open Meteo API https://open-meteo.com/en/docs
  • Factors: skin surface area exposure, skin tone (Fitzpatrick Scale), weather (direct solar radiation watts/per square meter)
  • Research questions to find answers to:
    • how much melanin blocks solar radiation? https://pmc.ncbi.nlm.nih.gov/articles/PMC2671032/#:~:text=The%20efficacy%20of%20melanin%20as,of%20the%20skin%20against%20sunburn.
      • I-24.0%
      • II-20.6%
      • III-17.3%
      • IV-14.0%
      • V-10.7%
      • VI-7.4%
    • what specific UV ray causes vitamin D production?
      • UVB which only comprises 5% of UV rays and the rest of it is UVA.
    • how much vitamin D is absorbed via supplementation?
      • only 60% is absorbed
    • how does the amount of skin exposure determine amount of solar radiation absorbed into skin?
      • hands & face: 12%
      • short sleaves: 26%
      • shorts & t-shirt: 46%
      • only shorts: 72%
      • naked: 99%
    • BMI
    • Age https://pmc.ncbi.nlm.nih.gov/articles/PMC3256341/
      • 0-21 100%
      • 22-40 83%
      • 31-59 66%
      • 60+ 49%
    • Total Human Surface area Du Bois formula
      • body surface area (m2) = 0.007184 * weight^0.425(kg) * height^0.725(cm)
    • Minimum amount of solar radiation for vitamin D production in skin
      • 0.00346 W/m2
    • VIT D FORMULA via sunlight https://www.sciencedirect.com/science/article/pii/S0048969716320307?via%3Dihub
      • refer to chart: https://docs.google.com/spreadsheets/d/10Q1NNXO7l7ZDnmvvAHUgIwdjus7XbOUkNwU1CQInJm8/edit?gid=42196605#gid=42196605
      • first get watts absorbed by multiplying the recorded radiance and total body surface area times percentage of chosen skin exposed based on the current uv index
      • second multiply watts absorbed by the Vitamin D rate to get final rate/min based on the skin type

Finished Tasks

• implement open-meteo to get solar radiation for the day
• implement local storage is save on API uses per session/user
• get user's location coords and timezone
• line chart to view hours and uv index for the day
• pie chart to see the greatest and least amount of vitamin D produced for each hour where production is > 0
• implement google maps with coords https://developers.google.com/maps/documentation/embed/quickstart

Current Tasks

Future Tasks