Outside medicine, people usually refer to forceps as tweezers, tongs, pliers, clips or clamps. Isolated hairs can be removed with tweezers or electrolysis. Some credit card knives can contain other small tools, such as tweezers, or toothpicks. Extrafollicular hairs can usually be pulled gently from under the skin with tweezers. Hair is also sometimes removed by plucking with tweezers. Ancient Roman women wore chatelaines with ear scoops, nail cleaners, and tweezers. Laser grippers are known also as laser tweezers. Raman spectroscopy and optical tweezers, which use a laser beam to trap and manipulate cells. Other items were made from bronze, including needles, fishhooks, tweezers, axeheads, and awls. Fourier optical theory is used in interferometry, optical tweezers, atom traps, and quantum computing. E.g., Raman tweezers, which combine Raman spectroscopy with optical tweezers. They also often find application in holographic optical tweezers. If this is unavailable, a strip of adhesive tape or tweezers may be used. The majority of optical tweezers make use of conventional TEM Gaussian beams. Light can be used to position matter using various phenomena (see optical tweezers).