Method for performing experiment for observing molecular motion

Abstract

The invention relates to a method for performing an experiment for observing molecular motion, which comprises the following steps: grinding, during which water is filled in a vessel and grinding an ink stick in the vessel; liquid taking, during which 1 to 3 drops of liquid is taken by a burette after the ink stick is ground in the vessel for a plurality of times and placed into a groove on a blood counting chamber, cover glass is covered, and excessive water on the edge is absorbed by paper; and the placement of the blood counting chamber on a viewing platform of a microscope and the adjustment of the microscope for observation of 'molecular motion trace' represented by a plurality of carbon particles from an ocular lens. A camera on a video display stand can be aimed at the ocular lens of the microscope vertically, and the focus of the video display stand is adjusted till 'molecular random motion' represented by a plurality of carbon particles can be seen on the large screen. According to the technical proposal, the 'molecular motion trace' can be observed with a low power biological microscope in a common middle school by using ink produced by grinding an ink stick in the vessel, single-student observation can be changed into the real-time common observation of the students in class by the conversion and amplification of the video display stand, and a teacher can give real-time analysis and explanation. Thus, the experiment is more visual and universal, the interests of students are aroused, and the classroom teaching effect is improved.

Description

technical field [0001] The present invention relates to an experimental method for observing molecular motion in physics, specifically related to the first edition in May 2004, the second edition in April 2007, and the first printing in Zhejiang Province in March 2008. It was approved by the National Primary and Secondary School Textbook Approval Committee in 2004, edited by People's Education Publishing House, Curriculum Textbook Research Institute, and Physics Curriculum Textbook Research Center, and published by People's Education Press. An improvement of the experiment of observing molecular motion in the section "Brownian Motion" in the first chapter "Theory of Molecular Motion" (textbook page 5). Background technique [0002] If you want to really observe the molecular movement, due to the insufficient magnification, it is impossible for ordinary optical microscopes. Only through electron microscopes, and it needs more than hundreds of thousands of times, which is bey...

AI Technical Summary

Problems solved by technology

[0005]2. If you use a high-power microscope with a power of more than 100,000 times to observe, because the instrument is expensive and can only meet the needs of a small number of students in the classroom, it is not Good for everyone, or time-consuming, laborious, and inefficient

[0006]3. Since the microscope is only suitable for one person to observe in turn, it is not conducive for teachers to make real-time analysis and explanation in class