Who invented time, who invented the clock? Why 1 hour, why 60 minutes, why 60 seconds? Since prehistoric times, man has sought to measure time, to...
A young boy is taught the wonder of standard unit of measurement by the world's greatest superhero: Measuring Man!
Illustrates principles for measuring distance, mass and time--the basic quantities in physical science. Emphasizes the importance of accuracy....
Precision: The Measure of All Things is a three-part British television series outlining aspects of the history of measurement. It was originally...
ការចូលប្រើដោយឥតគិតថ្លៃគ្មានដែនកំណត់, ស្វែងរកអ្វីទាំងអស់គ្មានការផ្សាយពាណិជ្ជកម្ម, ចំណងជើងរាប់លានហើយបន្ថែមជារៀងរាល់ថ្ងៃ, គ្រប់វេទិកានិងធ្វើឱ្យប្រសើរពេញលេញ, គ្រប់ទីកន្លែងនិងគ្រប់ពេលវេលា
