In the first picture you can see natural light (light from the sun, you don't need to do anything else to get the light) and on the second picture, you can see artificial light because it is not natural and they faked it and made it themselves
Colonel Jimmy Doolittle’s April 1942 raid on Japan began with the loading of sixteen aboard a Navy aircraft carrier, the USS “Hornet,” for the first time. This painting depicts the ships of Task Force sailing from San Francisco.
USS Indianapolis - Survivors in shark infested waters. Only 321 survived of the approximately 900 men who went into water. Many died from shark attacks. My brother-in-law's grandfather was one of the survivors.