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Historically, the definition of a scientific instrument has varied, based on usage, laws, and historical time period. [1] [2] [3] Before the mid-nineteenth century such tools were referred to as "natural philosophical" or "philosophical" apparatus and instruments, and older tools from antiquity to the Middle Ages (such as the astrolabe and pendulum clock) defy a more modern definition of "a ...
A measuring instrument for radio waves: the 64-meter radio telescope at Parkes Observatory, Australia, as seen in 1969, when it was used to receive live televised video from Apollo 11. Considerations related to electric charge dominate electricity and electronics. Electrical charges interact via a field. That field is called electric field.If ...
Sid the Science Kid: The Movie is an animated film premiered on PBS Kids on March 25, 2013 () (the same day that reruns of the show were added to sister network, PBS Kids Sprout). It featured the original voice cast of the series alongside special guest voice Christopher Lloyd as Dr. Bonanodon.
Teach kids ages 8 and up about the laws of physics with this comprehensive science kit featuring six different projects, including a rubber band car, sharpening wheel, and rocket launcher.
A typical shovel. A shovel is a tool used for digging, lifting, and moving bulk materials, such as soil, coal, gravel, snow, sand, or ore. [1] Most shovels are hand tools consisting of a broad blade fixed to a medium-length handle.
Science Buddies is a website, [2] recommended by educational organizations such as the ALA [3] and the SciLinks program of the National Science Teachers Association (NSTA). [4] All resources and tools on the Science Buddies website are available free to students and teachers.
In a scientific or medical context, they are normally referred to as just "forceps", a name that is used together with other grasping surgical instruments that resemble pliers, pincers and scissors-like clamps. Tweezers make use of two third-class levers connected at one fixed end (the fulcrum point of each lever), with the pincers at the others.
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