Demonstration instrument for increasing internal energy of object by gravity acting
A technology of gravity and work, applied in the direction of instruments, educational tools, teaching models, etc., can solve the problems of physical kinetic energy increase and difficult quantitative calculation, etc., and achieve the effect of convenient operation, short experiment time and obvious effect
Inactive Publication Date: 2012-07-11
上海市嘉定区第二中学
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Doing a function increases the physical kinetic energy, and also increases the internal energy of the object. Generally, friction is used to do work, and the increase in the internal energy of the object is used as an example to prove it. Since the work of friction is difficult to calculate quantitatively, it can only be explained qualitatively.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] Below in conjunction with accompanying drawing, further illustrate how the present invention is realized:
[0020] 1) After measuring the initial temperature of a certain amount (20 grams) of lead particles with an infrared temperature tester, put them into a plexiglass tube with a length of 1000 mm.
[0021] 2) Seal both ends of the plexiglass tube with a rubber stopper.
[0022] 3) Pierce the medical syringe needle through the rubber stopper, extract the air in the tube, and make the air in the tube thin.
[0023] 4) Hold the middle part of the plexiglass tube and turn it, so that the lead pellets can freely fall freely in the tube.
[0024] 5) Measure the temperature of the lead particles with an infrared thermometer.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a demonstration instrument for increasing internal energy of an object by gravity acting, which is a teaching instrument for students to observe and calculate the conversion of gravitational potential energy into internal energy of the object by gravity acting. The demonstration instrument comprises a certain amount of lead particles, a hollow transparent organic glass pipe, a large-sized medical needle cylinder, and a hand-held medical infrared thermoscope. The demonstration instrument has the characteristics and advantages of simple structure, convenience for operation, clear principle, short experimental period, obvious effect, capability of being repeatedly used and no energy consumption or material loss.
Description
Technical field: [0001] The invention relates to a physics teaching instrument, which can be used in physics teaching in junior high schools and high schools. Background technique: [0002] Doing a function can increase the physical kinetic energy and also increase the internal energy of the object. Generally, friction is used to do work and the internal energy of the object is increased as an example to prove it. Since the work of friction is difficult to calculate quantitatively, it can only be explained qualitatively. The gravity of the device is used for functional quantitative calculation, and the increased internal energy of the object can also be calculated by increasing the temperature of the object. Therefore, under the condition of ignoring the secondary factors, it can be roughly calculated: the physical phenomenon that gravitational potential energy is converted into internal energy by gravitational work equivalently. Invention content: [0003] The purpose of...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/06G09B23/10
Inventor 周凤林周礼邦陆林元
Owner 上海市嘉定区第二中学