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Related Concept Videos

Frequency of Spring-Mass System01:17

Frequency of Spring-Mass System

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One interesting characteristic of the simple harmonic motion (SHM) of an object attached to a spring is that the angular frequency, and the period and frequency of the motion, depend only on the mass and the force constant of the spring, and not on other factors such as the amplitude of the motion or initial conditions. We can use the equations of motion and Newton's second law to find the angular frequency, frequency, and period.
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Korotkoff sounds are the specific sounds heard while measuring blood pressure using a sphygmomanometer, typically with a stethoscope or a Doppler device. They are named after Russian physician Nikolai Korotkov, who first described them in 1905. These sounds correspond to turbulent blood flow in the artery as the blood pressure cuff is gradually released after inflation.
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A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
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The famous and controversial Stanford Prison Experiment, conducted by social psychologist Philip Zimbardo and his colleagues at Stanford University, demonstrated the power of social roles, social norms, and scripts.
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Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
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A bond can be broken either by heterolytic bond cleavage to form ions or homolytic bond cleavage to yield radicals. A fishhook arrow is used to represent the motion of a single electron in homolytic bond cleavage. There are two main sources from which radicals can be formed:
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Related Experiment Video

Updated: Mar 21, 2026

Molecular Spring Constant Analysis by Biomembrane Force Probe Spectroscopy
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The rites of spring, Take 2.

Eve Marder1

  • 1Department of Biology and the Volen National Center for Complex Systems, Brandeis University, Waltham, United States.

Elife
|May 19, 2016
PubMed
Summary

Recruiting PhD students presents challenges, but researchers anticipate welcoming new doctoral candidates soon. This process, while sometimes difficult, ultimately brings fresh perspectives to scientific inquiry.

Area of Science:

  • Neuroscience
  • Systems Neuroscience
  • Computational Neuroscience

Background:

  • Recruiting doctoral students is essential for advancing scientific research.
  • The process can be lengthy and demanding for both institutions and applicants.

Purpose of the Study:

  • To highlight the anticipation and challenges associated with recruiting PhD students.
  • To provide insight into the academic cycle of welcoming new graduate researchers.

Main Methods:

  • Qualitative observation of the academic recruitment cycle.
  • Personal reflection on the process of graduate student selection.

Main Results:

  • Despite frustrations, there is optimism regarding the arrival of new PhD students.
Keywords:
careerscareers in sciencegrad schoolliving science

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  • The arrival of new students signifies the continuation and progression of research endeavors.

    • Conclusions:

    • The recruitment of PhD students, though challenging, is a vital and anticipated part of academic life.
    • Successful recruitment ensures the future of scientific innovation and discovery.