Category: Research Paper

Is 70 or 50 sunscreen better? High-SPF products don’t give you a whole lot more protection. But the truth is that higher-SPF products are only marginally better at shielding you from UVB, according to both the EWG and the Skin Cancer Foundation. SPF 30 blocks nearly 97% of UVB radiation, SPF 50 blocks about 98%, […]

How much is a replacement ID in California? Pay a $29 replacement fee, if you’re under 62 years old. You will not need to bring in a birth date or legal presence document. Click here for more details on duplicate or replacement ID cards in California. What if I lost my NYC ID? IDNYC cardholders […]

Does every month have a Friday the 13th? Any month that starts on a Sunday contains a Friday the 13th, and there is at least one Friday the 13th in every calendar year. On average, there is a Friday the 13th once every 212.35 days, whereas Thursday the 13th occurs only once every 213.59 days. […]

How do I determine the size of an image in RGB? 3000 x 2400 pixels x 3 = 21.6 million bytes = 20.6 megabytes. The last “× 3” is for 3 bytes of RGB color information per pixel for 24-bit color (3 RGB values per pixel, which is one 8-bit byte for each RGB value, […]