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本文对设计性物理实验的选题与设计进行了探讨,介绍了其选题原则,并着重讨论了实验项目内诸模块的设计问题。 相似文献
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冷却法测量金属比热容误差探讨 总被引:1,自引:0,他引:1
本文对冷却法测量金属比热容实验的原理和仪器做了简要介绍,并着重对该实验误差的主要来源进行了探讨。 相似文献
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We calculate the diamagnetic spectrum of lithium at highly excited states up to the positive energy range using the exact quantum defect theory approach. The concerned excitation is one-photon transition from the ground state 2s to the highly excited states np with π and σ polarizations respectively. Lithium has a small quantum defect value 0.05 for the np states, and its diamagnetic spectrum is very similar to that of hydrogen in the energy range approaching the ionization limit. However, a careful calculation shows that the spectrum has a significant discrepancy with that of hydrogen when the energy is lower than 70cm-1 . The effect of the quantum defect is also discussed for the Stark spectrum. It is found that the σ transition to the np states in an electric field has a similar behavior to that of hydrogen due to zero interaction with channel ns. 相似文献
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