One-way mirror

One-way mirror

Basic Theory

Published in H. Angus Macleod, Thin-Film Optical Filters, 2017

Among other things, this expression shows that the one-way mirror, which allows light to travel through it in one direction only, cannot be constructed from simple optical thin films. The common so-called one-way mirror has a high reflectance with some transmittance and relies on an appreciable difference in the illumination conditions existing on either side for its operation.

Exploring User Micro-Behaviors Towards Five Wearable Device Types in Everyday Learning-Oriented Scenarios

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Journal Information

Published in International Journal of Human–Computer Interaction, 2021

Neha Rani, Sharon Lynn Chu, Qing Li

A wizard-of-oz approach was used for linking the three components of the setup. The LEDs attached to the kitchen objects of interest were connected to breadboards located behind the one-way mirror via thin long cables. In that way, an experimenter can switch on and off individual object LEDs at will by manually disconnecting the LED circuits (Figure 3). Each time a question was asked by the user, the researcher manually updated the information in the phone app using the remote config function in Google Firebase. The researcher selected an answer to push to the phone app by searching the Firebase database for the best match with the user’s question. The user received the answer to the question they asked together with a (text accompanied by a vibration and a buzzing sound) notification on the given Android smartphone. The notification was also manually triggered by the experimenter through cloud messaging via Google Firebase after he/she has updated the information on the phone app.

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