“Chameleon Barometer”

Boom Chameleon

We introduce the Boom Chameleon, a novel input/output device consisting of a flat-panel display mounted on a tracked mechanical boom. The display acts as a physical window into 3D virtual environments, through which a one-to-one mapping between real and virtual space is preserved. The Boom Chameleon is further augmented with a touch-screen and a microphone/speaker combination. We present a 3D a...

The Library Barometer 2000.PDF

4 What is the use of user studies? 5 Background and aim of the report 5 Organisational aspects of quality assurance and the development of university libraries 6 Library Barometer 2000 – point of departure 8 The main standpoints of the reference group 8 The aim of the Barometer 9 Method of procedure 10 Results 11 Level 1 – A framework for interpretation: Information channels and library relatio...

Chameleon Signatures

Tests of chameleon gravity

Theories of modified gravity, where light scalars with non-trivial self-interactions and non-minimal couplings to matter-chameleon and symmetron theories-dynamically suppress deviations from general relativity in the solar system. On other scales, the environmental nature of the screening means that such scalars may be relevant. The highly-nonlinear nature of screening mechanisms means that the...

Beyond the Chameleon Mechanism

As a result of non-linear self-interactions, in chameleon theories where the field couples to matter much more strongly than gravity does, the fifth force between two bodies with thinshell is independent of their coupling to the field. As a consequence the bounds on the coupling coming from terrestrial tests of gravity, measurements of the Casimir force and those constraints imposed by the phys...