Mounting Photographs

Photographs

Polystyrene mounting medium.

Polystyrene mounting medium obtainable Ltd, 20 Du The medium described by Kirkpatrick One pounc and Lendrum (1939) and named by them mountant DPX (Distrene plasticised in xylene) was (75°% one replaced by a better formula in 1941. This medium BPS (butyl phthalate plasticised styrene) has given excellent and economical service until recently. The current trouble was not due to the makers of the ...

Mounting of Surface Mount Components

Over the past few year, electronic products, and especially those which fall within the category of Consumer Electronics, have been significantly reduced in physical size and weight. Products such as cellular telephones, lap-top computers, pagers, camcorders, etc., have been reduced by as much as 3/4 of their original introductory size and weight. The most significant contributing factor to thi...

Challenges in Bare Die Mounting

Traditionally, the evolution of advanced IC assemblies has been due to defense and aerospace applications, where reliability, size and weight were at a premium, and cost was a secondary consideration. In the 1980’s, high performance computing became the advanced packaging development stimulus. That world changed again in the late 1990’s with the emergence of ubiquitous digital content, providin...

Negative emotional photographs are identified more slowly than positive photographs.

In three experiments, we investigated whether the emotional valence of a photograph influenced the amount of time required to initially identify the contents of the image. In Experiment 1, participants saw a slideshow consisting of positive, neutral, and negative photographs that were balanced for arousal. During the slideshow, presentation time was substantially limited (60 ms), and the images...