The measurements with the different systems give the following values: The aquarium has the following water values: 18 mg/l NO3, 0.5 mg/l NO2, 5° dGH, 7 mg/l CO2, 1.5° dKH, 6.8 pH. In this case please check your measurements once more. tests which have been open for more than 9 months) or incorrect use (with air-filled drops and deviating water quantities). Incorrect values can occur through expired drop tests too (i.e. “Puddles” can cause the colour fields to react with each other and to produce reflections. Please remember ALWAYS to shake the water off the analysis strip sideways. Direct light from above casts shadows or reflections which can affect the colour rendering. Best is to carry out the test near a window with bright light. Bigger differences between the values mostly indicate an incorrect reading caused by shades/reflections. Therefore ProScan also has a scale to enter the values and to avoid jumps at repeated measurements. For example the steps in a drop test are different to those of the ProScan. The JBL ProScan app is available in the following languages: de, en, fr, nl, es, it, pt, ru, cs, pl, tr and ja.Įach test has a fixed scale, which enables the allocation of the water values. If this were the case, the colours on the colour chart would be illuminated differently. But even more important is that the incidence of light is uniform and does not show partial shadows and partial sunlight. Photographing the test strip on the colour chart should ideally be done in daylight. Without dripping off, the drops on the colour fields reflect the light too strongly and lead to inaccurate results.
It needs to be drained off HORIZONALLY and carefully. When removing the test strip from the water, do not shake it vertically, as the wet colours will then run into the other colour fields. With the nitrite result, experience shows that an additional drop test measurement (with JBL PROAQUATEST NO2 Nitrite) is a good idea if the JBL ProScan result does NOT show 0, as this value needs to be 100% reliable (nitrite is fatally toxic for fish from 0.4 mg/l). Since smartphones provide an automatic white balance, the colour reading is more accurate than if we compare colours with our eyes! If the test is performed correctly, the result is absolutely reliable. Depending on the analysis results in the sections “Aquarium Freshwater” and “Garden Pond” individualised recommendations and hints are given as to which JBL products can help to set the ideal/optimal water values. A repeated scan of the strip leads to different values, since the strip goes on reacting indefinitely.ĭuring the analyses "Aquarium Freshwater" and "Water" the current CO2 content in the water is calculated as an additional bonus. Note: The test strips are only intended for one measurement each. But that rapid rotator’s nature is unclear, with some recent studies saying it is likely a neutron star, not a white dwarf.Water analysis using your smartphone - the new generation The star’s only known rival is an even faster-spinning object in orbit with the blue star HD 49798. The blip repeated every 24.93 seconds, revealing the white dwarf star’s record-breaking rotation period, the researchers report August 26 at. The discovery occurred the night of August 7, when astronomer Ingrid Pelisoli of the University of Warwick in Coventry, England, and her colleagues detected a periodic blip of light from the dim duo. Just as falling water makes a waterwheel turn, so gas falling from the red companion star made the white dwarf twirl. The fast-spinning white dwarf, named LAMOST J0240+1952 and located in the constellation Aries, got in a whirl because of its ongoing affair with a red dwarf star that revolves around it.
The typical white dwarf takes hours or days to spin. The star’s surface gravity is so great that if you dropped a pebble from a height of a few feet, it would smash into the surface at thousands of miles per hour. That makes it the fastest-spinning star of any sort ever seen - unless you consider such exotic objects as neutron stars and black holes, some of which spin even faster, to be stars ( SN: 3/13/07).Ībout as small as Earth but roughly as massive as the sun, a white dwarf is extremely dense. The sun turns once a month and the Earth once a day, but a white dwarf star 2,000 light-years away spins every 25 seconds, beating the old champ by five seconds.
0 kommentar(er)
