Real image (such as the images on the right), real rays of light are always represented by full, solid lines; perceived or extrapolated rays of light are represented by dashed lines. A real image occurs where rays converge, whereas a virtual image occurs where rays only "appear" to converge. Real images can be produced by concave mirrors and converging lenses, only if the object is placed further away from the mirror/lens than the focal point and this real image is inverted. As the object approaches the focal point the image approaches infinity, and when the object passes the focal point the image
Concave cake as sailors baked concave cakes as a symbol of “sunny days” and good luck. In between the 15th century and 17th century, the cake was introduced to Nagasaki, a city in Japan. The original variety of this cake was honey, but as its popularity grew in countries like Japan, different flavors emerged, such as strawberry, Earl Grey, and matcha. The concave cake trend was triggered in April 2013 when a Taiwan famous variety show - Kangxi Lai Le - recommended the concave shaped cake to the audience. Due to the popularity of the show and its high viewership, online searches