Fecha
2018-04-17
Editor/a
Director/a
Tutor/a
Coordinador/a
Prologuista
Revisor/a
Ilustrador/a
Derechos de acceso
info:eu-repo/semantics/openAccess
Título de la revista
ISSN de la revista
Título del volumen
Editor
IOP Science
Citas
0 citas en 
0 citas en 
Resumen
We present a remotely controlled experiment in which liquid droplets are levitated by a vertically aligned focused laser beam. The droplets levitate at the point where the photon pressure of the focused laser beam balances the gravitational force. The size of a trapped droplet can be measured by detecting the diffraction pattern created by the trapping laser light. The charge on the trapped droplet can thereafter be determined by observing its motion when a vertically directed electrical field is applied. This experiment allows a student to study many fundamental physics processes, such as photon pressure, diffraction of light, or the motion of charged particles in electrical fields. The complexity of the experiments and the concept studied make this suitable for advanced studies in physics. The laser power required in the experiment is about 1 W, which is a thousand times greater than the value of 1 mW at which lasers begin to be capable of causing harm to eyes; high voltages are also used. Further, the cost of the equipment is relatively high, which limits its availability to most undergraduate teaching laboratories. It thus constitutes an ideal experiment for remote control.
Descripción
This is an Accepted Manuscript of an article published by IOP Science in "Volume 39, Number 4", available at: https://doi.org/10.1088/1361-6404/aaaac3
Este es el manuscrito aceptado del artículo publicado por IOP Science en "Volume 39, Number 4", disponible en línea: https://doi.org/10.1088/1361-6404/aaaac3
Categorías UNESCO
Palabras clave
Citación
D Galan et al 2018 Eur. J. Phys. 39 045301, https://doi.org/10.1088/1361-6404/aaaac3
Centro
E.T.S. de Ingeniería Informática
Departamento
Informática y Automática