CN210223249U - Planck constant tester - Google Patents
Planck constant tester Download PDFInfo
- Publication number
- CN210223249U CN210223249U CN201920435924.2U CN201920435924U CN210223249U CN 210223249 U CN210223249 U CN 210223249U CN 201920435924 U CN201920435924 U CN 201920435924U CN 210223249 U CN210223249 U CN 210223249U
- Authority
- CN
- China
- Prior art keywords
- track
- seat
- photoelectric tube
- color filter
- mercury lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Spectrometry And Color Measurement (AREA)
Abstract
The utility model discloses a Planck constant apparatus, including Q9 seat, Q9 one side fixedly connected with photoelectric tube magazine, the last opposite side fixedly connected with condensing system for Q9 seat of photoelectric tube magazine, photoelectric tube magazine top is connected with the rotatory driver plate of color filter, photoelectric tube magazine one side on the rotatory driver plate of color filter is connected with the rotatory driver plate of diaphragm, the last opposite side for the rotatory driver plate of color filter of photoelectric tube magazine is connected with the linear bearing slide, linear bearing slide sliding connection is on high accuracy double track slip track, high accuracy double track slip track fixed mounting is on the testboard base, beneficial effect is: the device has certain weight due to the arranged high-precision double-track sliding track, so that the base of the measuring table is stable, the positioning effect of the linear bearing sliding seat is good, the optical axis and the mechanical axis meet the coaxial requirement, the measuring distance is stably changed by moving the photoelectric dark box device, and the repeatability is good when the measuring is carried out at each time.
Description
Technical Field
The utility model relates to a determinator, in particular to planck constant determinator belongs to physics photoelectric experiment teaching instrument technical field.
Background
Among the prior art, the Planck constant experiment appearance that some schools used at present is most to be tested on very single simple and easy workstation, and optical axis and mechanical axis center are difficult coaxial, and the instrument is unstable yet, and measuring repeatability is relatively poor, consequently the utility model provides a Planck constant apparatus.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome prior art's defect, provide Planck constant apparatus, this device has certain weight because of the high-accuracy double track slip track that sets up to make the measuring table base stable, because of linear bearing slide location is effectual, make optical axis and mechanical axis satisfy coaxial requirement, stably change measuring distance through removing the dark box-packed putting of photoelectricity, thereby it is good to reach repeatability when measuring at every turn.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model discloses Planck constant apparatus, including Q9 seat, Q9 one side fixedly connected with photoelectric tube magazine, the last opposite side fixedly connected with condensing system for Q9 seat of photoelectric tube magazine, photoelectric tube magazine top is connected with the rotatory driver plate of color filter, the last opposite side for the rotatory driver plate of color filter of photoelectric tube magazine is connected with the linear bearing slide, linear bearing slide sliding connection is on high accuracy double track slip track, high accuracy double track slip track fixed mounting is on the testboard base, testboard base one side fixedly connected with scale, be provided with mercury lamp box on the testboard base, mercury lamp box one side is connected with the power pack.
As an optimized technical proposal of the utility model, one side of the phototube cassette on the color filter rotary drive plate is connected with the diaphragm rotary drive plate.
As an optimized technical scheme of the utility model, testboard base both sides below all is connected with the leveling footing.
As an optimized technical scheme of the utility model, mercury lamp power pack all passes through wire and electronic box electric connection with Q9 seat.
The utility model discloses the beneficial effect who reaches is: the device has certain weight due to the arranged high-precision double-track sliding track, so that the base of the measuring table is stable, the positioning effect of the linear bearing sliding seat is good, the optical axis and the mechanical axis meet the coaxial requirement, the measuring distance is stably changed by moving the photoelectric dark box device, and the repeatability is good when the measuring is carried out at each time.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the appearance structure of the electric box of the present invention;
FIG. 3 is a schematic view of the connection structure of the high-precision double-track sliding rail and the linear bearing sliding seat of the present invention;
FIG. 4 is a schematic diagram of the structure of the measurement result of the present invention;
FIG. 5 is a voltage-current characteristic curve diagram of the photocell cassette of the present invention;
fig. 6 is a schematic view of the usage state of the present invention.
In the figure: 1. seat Q9; 2. a photocell cassette; 3. a color filter rotating dial; 4. rotating the diaphragm to pull the disc; 5. a light condensing system; 6. a high-precision double-track sliding track; 7. a mercury lamp capsule; 8. a mercury lamp power supply box; 9. a scale; 10. a linear bearing carriage; 11. A test table base; 12. leveling the bottom feet; 13. an electric box.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
As shown in fig. 1-6, the planck constant measuring apparatus includes a Q9 base 1, a phototube magazine 2 is fixedly connected to one side of the Q9 base 1, a light condensing system 5 is fixedly connected to the other side of the phototube magazine 2 opposite to the Q9 base 1, a color filter rotary dial 3 is connected to the upper side of the phototube magazine 2, a linear bearing is connected to the other side of the phototube magazine 2 opposite to the color filter rotary dial 3, a linear bearing slide carriage 10 is slidably connected to a high-precision double-track sliding rail 6, the high-precision double-track sliding rail 6 is fixedly installed on a test bench base 11, a scale 9 is fixedly connected to one side of the test bench base 11, a mercury lamp box 7 is arranged on the test bench base 11, and a mercury lamp power supply box 8.
One side of a phototube cassette 2 on the color filter rotating dial 3 is connected with a diaphragm rotating dial 4, the lower parts of two sides of a test board base 11 are both connected with leveling feet 12, and a mercury lamp power supply box 8 and a Q9 seat 1 are both electrically connected with an electric box 13 through wires.
In particular, the method comprises the following steps of,
(1) preparation work before the experiment: connecting an electric box 13 with a power line, connecting two Q9 seats 1 with the electric box 13 by using Q9 line connection, connecting the power line with a mercury lamp power box 8, turning on a power switch, preheating light source emission for 20 minutes, adjusting the distance between a photoelectric tube in a photoelectric cassette 2 and a mercury lamp in a mercury lamp box 7 to be 40cm and keeping the distance unchanged, adjusting a voltage adjusting switch of the electric box 13 to a voltage between-2V and +2V, and selecting a required range to be 10V by using a current amount and a selection switch-12And adjusting the zero setting knob to perform zero setting before testing.
(2) Dark power supply of the measuring photocell: multiplying power knob device 10 of tester-12The diaphragm on the photoelectric tube cassette 2 is rotated and dialed to a 'blind spot', no light is emitted on the photoelectric tube, the 'voltage adjusting knob' is rotated clockwise slowly, and the voltage range is changed properly. The dark current of the photocell read at this time from the corresponding current values at different voltages is carefully recorded,
(3) determination of the planck constant was performed:
1. the diaphragm rotating dial 4 on the rotating photoelectric tube cassette 2 selects the diaphragm to be phi 5 or phi 8;
2. rotating the rotary filter disc 3 to select the filter 365 uses a current range selection switch to select the desired range, typically 10-12；
3. Selecting a voltage within a regulation range of-2V- +2V by using a voltage conversion switch; before zero setting, the voltage is at-2V or less than-2V;
4. adjusting' zero adjustment: the knob causes the "Current display" window to appear as "00.0";
5. clockwise adjustment of the "coarse voltage adjust" knob to adjust the voltage from-2V or less until the indicator window shows "00.0" recording the cutoff voltage U0And note 1.
6. And rotating the color filter rotating disc again, sequentially selecting the color filters till 577, and repeating the steps and recording corresponding data. Note that: zeroing can no longer be performed in the above process.
(4) The method for measuring the voltammetry characteristics of the photoelectric tube comprises the following specific steps:
1. the diaphragm rotating dial 4 on the rotating phototube cassette 2 selects a diaphragm with the diameter phi 5, the color filter rotating disc 3 is rotated, and the selected color filter is selected;
2. selecting a proper current range (generally 10-12) to adjust a zero adjustment knob under the zero adjustment state, so that a current indication window is displayed as '00.0';
3. entering a test state, and selecting a proper voltage range of-2V- +30V ";
4. slowly adjusting a voltage adjusting knob clockwise to gradually increase the voltage value;
5. recording saturated photocurrent I values under different voltages and recording a table 2;
6. the above operation was repeated while changing the distance between the mercury lamp and the photo cassette.
7. Changing the wavelength of light waves of different frequencies repeats the above operation.
After the measurement is completed, the data is processed as follows:
(1) measurement of Planck constant h
The experimental data shown in figure 4 are used to obtain the cut-off voltage U at different frequenciesSDrawing on ruled paper, i.e. making US-a ν curve. If the photoelectric effect complies with Einstein equation, then USThe F (ν) relationship should be a straight line. Calculating the slope of the line, K ═ DeltaUSSubstituting/Δ ν into (5) obtains the planck constant h ═ ek. And calculating the error between the measured value and the recognized value, and the recognized value h of h0Comparing to obtain relative error
Wherein e is 1.602 × 10-19C,h0＝6.626×10-34J·S
As shown in figure 5
(2) Plotting volt-ampere characteristic curve of photoelectric tube
The output voltage indication should be in the state of "-2V- + 30V. The current range should be 10-9-10-12And re-zeroed.
The maximum range of the measurement of the volt-ampere characteristic curve is-2V- +30V, and the function and the use method of the instrument are as described above.
a. The saturation characteristic curve of the 5 spectral lines under the same diaphragm and the same distance can be observed.
b. The voltammetry saturation curves of a certain spectral line at different distances (namely different luminous fluxes) and at the same distance can be observed.
It can be verified that the saturation photocurrent of the photocell is proportional to the incident light.
At UAKMeasuring and recording the same spectral line and the same incident distance for 30V, and verifying that the saturated photocurrent of the photoelectric tube is in direct proportion to the incident light intensity when the diaphragms are respectively 5m and 8mm and the corresponding current values are in the third table.
Can also be at UAKWhen the same spectral line and the same diaphragm are measured and recorded for 20V, the current values of the photoelectric tube and the incident light at different distances, such as 100 mm and 400mm, are shown in the fourth table, and the fact that the saturation current of the photoelectric tube is directly proportional to the incident light intensity is also verified. As shown in figure 6, the above experiment shows that the product is best usedStatus.
The distance between the photoelectric tube in the photoelectric tube cassette 2 and the lamp source in the mercury lamp box 7 can be adjusted, and the volt-ampere saturation characteristic curves of 5 spectral lines under the same diaphragm can be adjusted;
the volt-ampere saturation characteristic curves of a certain spectral line at different distances and at the same distance can be observed;
the same spectral line and the same diaphragm are used for verifying that the saturation current of the photoelectric tube is in direct proportion to the incident light intensity by corresponding current values at different distances;
the corresponding current values under different diaphragms in the same spectral line, the same distance and the same distance are used for verifying that the saturation current of the photoelectric tube is in direct proportion to the incident light intensity;
therefore, the consistency of data at the same distance and the same diaphragm and the same spectral line is authenticated when different students perform experiments.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The Planck constant tester is characterized by comprising a Q9 seat (1), one side of the Q9 seat (1) is fixedly connected with a photoelectric tube cassette (2), the other side of the phototube cassette (2) corresponding to the Q9 seat (1) is fixedly connected with a light-gathering system (5), a color filter rotating drive plate (3) is connected above the phototube cassette (2), a linear bearing sliding seat is connected on the other side of the phototube cassette (2) opposite to the color filter rotating drive plate (3), the linear bearing sliding seat (10) is connected on the high-precision double-track sliding track (6) in a sliding way, the high-precision double-track sliding rail (6) is fixedly arranged on a base (11) of the test bench, the mercury lamp testing platform is characterized in that one side of the testing platform base (11) is fixedly connected with a scale (9), a mercury lamp box (7) is arranged on the testing platform base (11), and one side of the mercury lamp box (7) is connected with a mercury lamp power supply box (8).
2. The planck constant measuring instrument according to claim 1, wherein a diaphragm rotary dial (4) is attached to a side of the photocell cassette (2) on the color filter rotary dial (3).
3. Planck constant determinator according to claim 1, characterised in that levelling feet (12) are connected below both sides of the test bench base (11).
4. The planck constant measuring instrument according to claim 1, wherein the mercury lamp power box (8) and the Q9 socket (1) are electrically connected with the electric box (13) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920435924.2U CN210223249U (en) | 2019-04-02 | 2019-04-02 | Planck constant tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920435924.2U CN210223249U (en) | 2019-04-02 | 2019-04-02 | Planck constant tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210223249U true CN210223249U (en) | 2020-03-31 |
Family
ID=69922849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920435924.2U Active CN210223249U (en) | 2019-04-02 | 2019-04-02 | Planck constant tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210223249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112652215A (en) * | 2020-12-14 | 2021-04-13 | 河北省地质实验测试中心 | Experimental science popularization demonstration device by spectrophotometry |
-
2019
- 2019-04-02 CN CN201920435924.2U patent/CN210223249U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112652215A (en) * | 2020-12-14 | 2021-04-13 | 河北省地质实验测试中心 | Experimental science popularization demonstration device by spectrophotometry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kron et al. | Red and infrared magnitudes for 125 stars in ten areas | |
| Dobson | A photoelectric spectrophotometer for measuring the amount of atmospheric ozone | |
| CN210223249U (en) | Planck constant tester | |
| US2455116A (en) | Method of and apparatus for measuring the color quality of light | |
| CN105444993A (en) | Optical system comprehensive performance tester | |
| CN108267661A (en) | Photovoltaic property measuring apparatus, measuring method and the imaging system of a kind of photoelectric device | |
| CN103954436A (en) | High-precision spectral radiance calibration device | |
| CN102620821B (en) | Method for testing luminance of LED caution light and device for realizing method | |
| CN211234729U (en) | Spectral response testing device for digital infrared focal plane detector | |
| CN103398984B (en) | The outfield measuring method of photo-electric telescope transmissivity of optical system | |
| CN109407140B (en) | Multi-path photomultiplier leveling device for PET detector | |
| CN202494517U (en) | Device for testing brightness of LED caution light | |
| CN107402365B (en) | Calibration method of LED photoelectric comprehensive tester | |
| CN211787795U (en) | Photoelectric effect quantitative experiment device | |
| Coor Jr et al. | An Automatic Recording Spectrophotometer | |
| Preston et al. | A photoelectric spectrophotometer of high accuracy | |
| US3215849A (en) | Spectrophotometer with movable cuvette unit to isolate a single wavelength | |
| CN111323121A (en) | Ultraviolet spectrum remote sensing instrument wide-range linearity testing device and method | |
| Winch | The measurement of light and colour | |
| US3729259A (en) | Method and apparatus for making spectrometric measurements of a constituent of a test sample | |
| CN110954212A (en) | Toy LED light radiation test system | |
| CN211061054U (en) | Toy L ED light radiation test system | |
| US1726318A (en) | Photo-electric photometer | |
| CN109990980B (en) | Visible light detector visual function correction method based on spectrometer | |
| CN108318225A (en) | The calibrating installation of automatic tester for vehicle headlamp and digital display methods |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |