Blender, Boomerang, Air fryer, Mummies, Doorknob, E Sports, Pedals. Find out about the inner workings and origins of the things that pique your curiosity. Blender: A blender is a kitchen or laboratory appliance that is used to mix, puree, or emulsify food and other substances. Boomerang: Throw it away, and it will come right back to you. A boomerang is a tool, typically a flat airfoil that is designed to spin and return to the thrower when thrown. Air Fryer: An air fryer is a frying machine that uses superheated air and about 80 percent less oil than traditional deep frying to produce crispy food such as chips, chicken, and fish. Mummies: A mummy is a preserved deceased human or animal through intentional or accidental exposure to chemicals, extreme cold, or other environmental factors. Doorknob: A door knob is a round operating mechanism that is attached to a door. Although there are several types, designs, and features, a door knobs primary function is to manually open or close a door. E Sports: Electronic sports or simply eSports are a form of competition that is enabled by electronic systems known as video games. Pedals: It came from the Latin word pes, or pedis, which means foot, because it is controlled using the foot.