What color clothing is recommended for heat and UV protection?
【What color clothing is less likely to carry heat? Difference in surface temperature of up to 20°C or more Hea … 続きを読む
yellow
Learn about color visibility in the dark. Is it important to use different colors during the day and at night?
【Theater seats, why so many “red” seats?】 https://www.visiontimesjp.com/?p=36373 ・The struc … 続きを読む