9,332 research outputs found
Recommended from our members
Developing your own curriculum
This chapter will explore the processes by which a newly qualified teacher can make a contribution to the design & technology curriculum. It is in six parts. First the chapter will consider the classroom conditions a teacher must create if his or her teaching is to be successful. Second we will explore four key features that determine the success of a subject in the curriculum. Third we will investigate how a newly qualified teacher might develop and articulate their vision for the subject. Fourth we will consider the importance of working with colleagues as part of the design & technology team in a school. Fifth we will discuss the areas in which you might make a contribution to developing the curriculum. Finally we will consider how you can become a reflective and effective practitioner through curriculum development
Diffraction-limited CCD imaging with faint reference stars
By selecting short exposure images taken using a CCD with negligible readout
noise we obtained essentially diffraction-limited 810 nm images of faint
objects using nearby reference stars brighter than I=16 at a 2.56 m telescope.
The FWHM of the isoplanatic patch for the technique is found to be 50
arcseconds, providing ~20% sky coverage around suitable reference stars.Comment: 4 page letter accepted for publication in Astronomy and Astrophysic
Impact of disorder on the 5/2 fractional quantum Hall state
We compare the energy gap of the \nu=5/2 fractional quantum Hall effect state
obtained in conventional high mobility modulation doped quantum well samples
with those obtained in high quality GaAs transistors (heterojunction insulated
gate field-effect transistors). We are able to identify the different roles
that long range and short range disorders play in the 5/2 state and observe
that the long range potential fluctuations are more detrimental to the strength
of the 5/2 state than short-range potential disorder.Comment: PRL 106, 206806 (2011
Anisotropic Fermi Contour of (001) GaAs Holes in Parallel Magnetic Fields
We report a severe, spin-dependent, Fermi contour anisotropy induced by
parallel magnetic field in a high-mobility (001) GaAs two-dimensional hole
system. Employing commensurability oscillations created by a unidirectional,
surface-strain-induced, periodic potential modulation, we directly probe the
anisotropy of the two spin subband Fermi contours. Their areas are obtained
from the Fourier transform of the Shubnikov-de Haas oscillations. Our findings
are in semi-quantitative agreement with the results of parameter-free
calculations of the energy bands.Comment: 4 pages, 4 figure
Electrovac -waves
New exact solutions of the Einstein-Maxwell field equations that describe
-waves are presented
- …