Transitional ballistics is a branch of ballistics that studies the behavior of projectiles as they transition from the subsonic to supersonic states, or vice versa. This transition occurs at a critical speed, known as the speed of sound in air (approximately 343 meters per second or 1,125 feet per second at sea level).

The Catterline Cartie Challenge is a unique event held in the village of Catterline in Scotland. It involves a thrilling race featuring homemade soapbox cars, commonly referred to as "carties." Participants create their own non-motorized vehicles and compete by racing them down a designated hill or track. The event is not only about speed but also encourages creativity, engineering skills, and community spirit, as local residents and visitors gather to watch the races.

The Franssen effect is a phenomenon in psychology related to how individuals perceive time, particularly in situations involving anticipation or expectation. It suggests that when someone is waiting for an event to occur, their perception of time may seem to slow down, leading them to feel like time is passing more slowly than it actually is. This effect can be particularly noticeable in high-stress or exciting situations, such as before a performance or during a significant life event.

Fred Dretske (1932–2013) was an influential American philosopher, known primarily for his work in the philosophy of mind, philosophy of language, and epistemology. He is particularly recognized for his contributions to theories of information, knowledge, and the relationship between perception and belief. One of Dretske’s key ideas is the concept of "information" as it pertains to knowledge and understanding.