Acoustics, Coding, Fiber Optics, Hard drives, Helium, Herbal medicines, High definition. Find out about the inner workings and origins of the things that pique your curiosity. Acoustics: Sounds are vibrations that disseminate through a medium as mechanical waves of pressure and displacement. Coding: Behind every computer software application and website, is sets of instructions or rules that a computer follows. These instructions are known as code. Fiber Optics: It is an upgrade of metal and copper wire cables. Fiber optics is a technology that uses a flexible, transparent fiber made of glass known as optical fiber, to transmit data in the form of light. Hard Drives: Also known as a hard disk drive, a hard disk, or fixed disk. A hard drive is a data storage device that is used to store and retrieve digital information. Helium: Helium is a chemical element that belongs to the noble gas group. Herbal Medicines: An herb is a plant or a specific part of a plant that can be used for its scent, flavor, or therapeutic properties. High Definition: High definition, Hi-def, or HD, is a system or technology for showing noticeably clear pictures on a television or computer screen or producing very clear sounds.