New Post has been published on


Author: Martes (2008.05.04 09:58) Downloaded: 2430 Download:

Many traders cruise “round” levels (to be some-more exact, a levels, a straight coordinate of which (in points) ends with “00″) as a levels of resistance/support. Example: a levels of 1.5800 as well as 1.5900 for EURUSD. Indicator RoundLevels draws dual “round” nearest levels upon top of as well as next a stream cost level.

The indicator is rsther than combined to promote primer trading. It has 4 buffers which store a values of straight coordinates of these levels. However, in this benefaction realization, usually a final worth of any aegis has an expect sense.
The outmost non-static LineWidth says for a density of lines component a “round” levels. The non-static KeepTraces regulates either to keep a aegis values distributed upon a preceding candlesticks.


Rating: 9 out of 10 (from 63 votes)

GNU screen and irssi line-length, width and wrapping

On Centos-6.4 there seems to be a problem with honoring the wrapping of lines in irssi within screen.

Normally one can just pass a “Ctrl-r” to irssi with  "C-a r" which will toggle irssi’s wrap on/off (reported at top of terminal with +wrap or -wrap).

or C-a F will make GNU screen fit the current contents within the window.

Schawlow - Townes Linewidth

The fundamental linewidth of a laser, which only acquires quantum noise, was already predicted by Schawlow and Townes even before the laser was experimentally demonstrated. The famous Schawlow-Townes equation is as follows:

\[ \Delta \nu_{laser} = \dfrac{ \pi h \nu (\Delta \nu_c )^2 }{ P_{out}} \]

with the photon energy \( h \nu \), the resonator bandwidth \( \Delta \nu_c \) (full width at half-maximum, FWHM), and the output power \( P_{out} \).

Reference: RP Photonics

[ Authors ]
Wenyan Yu, Wei C. Jiang, Qiang Lin, and Tao Lu
[ Abstract ]
We report narrow linewidth optomechanical oscillation of a silica microsphere immersed in a buffer solution. Through a novel optomechanical transduction sensing approach, single 10-nm-radius silica beads and Bovine serum albumin (BSA) protein molecules with a molecular weight of 66 kDalton were detected. This approach predicts the detection of 3.9 kDalton single molecules at a signal-to-noise ration above unity.