The mercury in the thermometer is creeping up (well... actually, the numbers on the digital weather station in the kitchen are increasing... modern day stuff, you know) and despite the snow...
The mercury in the thermometer is creeping up (well... actually, the numbers on the digital weather station in the kitchen are increasing... modern day stuff, you know) and despite the snow that still blankets the nearby mountains, the kids are begging to eat outside.
«When heat goes under the ocean, it expands just like
mercury in a thermometer,» Steve Nerem, lead scientist for NASA's Sea Level Change Team at the University of Colorado in Boulder, said in the press briefing.
Don't forget to shake down
the mercury in the thermometer first.
About a third of the current rate of sea level rise is from thermal expansion of the oceans (the water expands like
mercury in a thermometer), because they are absorbing about 90 percent of the increased heat from climate change.
And the Flemish Masters painted what the silver in their clients» purses told them to paint, not what
the mercury in their thermometers said.
Not exact matches
Followed by a feeling of calm, yes, of readiness, rising like
mercury in the competitive
thermometer of his backbone as he mounted the block.
Experts have recommended avoiding
mercury thermometers for many years now, so you probably won't even find one
in stores, but if you happen to have an old one, you should dispose of it and get a new, safe digital version.
These
thermometers are
mercury - free, specifically designed for use
in newborns and infants, give a reading
in 5 to 10 seconds, and include a short, flexible tip, so you don't have to worry about inserting the
thermometer too far.
Do not use a traditional
mercury thermometer - if you have one of these
in your home ask your doctor how to dispose of it safely.
Such
thermometers have a special sensor and can reduce the temperature measurement procedure at least twice
in comparison with the
mercury thermometer.
Of course, some parents still use
mercury thermometers which they used to measure the temperature
in their childhood.
That was before experts spread the word about the dangers of
mercury, even the small amount
in a
mercury thermometer.
In fact, this whole
thermometer has been using no harmful chemicals or materials like glass or
mercury.
There are other types of
thermometers, including the
mercury -
in - glass type, ear
thermometers, and pacifier type
thermometers.
Consider skipping the CFL bulbs
in the nursery to reduce potential exposure to
mercury (and of course, use a non-
mercury thermometer).
Elemental
mercury, like the kind found
in old
thermometers, evaporates readily and circulates through the atmosphere.
A broken
thermometer can release enough
mercury vapor to poison the air
in a room — one reason why some cities and several states discourage the sale of
mercury fever
thermometers.
With a
mercury thermometer, it may take three to five minutes to get a reading, while digital
thermometers give you your temp
in 30 to 60 seconds.
Until the 1960s, teething powders for babies contained
mercury in the form of calomel, and broken
mercury thermometers were a common exposure risk
in many countries up to the early 2000s.
You are always ready to roam and twirl around
in a slip dress irrespective of where the
mercury thermometer points to!
Hold it
in until the temperature is read (about 3 minutes for a
mercury thermometer), and then remove gently.
So, if you have two identical glass greenhouses with thermally isolated
mercury thermometers at equilibrium
in the sunlight [One with Air at Press =P, and the 2nd w / CO2 at Press =P], and you close the blinds — you will see the
thermometer in the CO2 greenhouse retain its temperature longer — not because of any «global warming» type effect, but simply because Air conducts heat to the walls of the greenhouse better than Air does.
Interestingly enough, former California State climatologist James Goodridge did an independent analysis of COOP stations
in California that had gone through modernization, switching from Stevenson Screens with
mercury LIG
thermometers to MMTS electronic
thermometers.
Ray Ladbury @ 291 —
In the spring of 1959 in my Physics 1c lab I designed, built and tested a negative thermometer; the mercury went down when the bulb was immersed in a beaker of warm wate
In the spring of 1959
in my Physics 1c lab I designed, built and tested a negative thermometer; the mercury went down when the bulb was immersed in a beaker of warm wate
in my Physics 1c lab I designed, built and tested a negative
thermometer; the
mercury went down when the bulb was immersed
in a beaker of warm wate
in a beaker of warm water.
So, if you have two identical glass greenhouses with thermally isolated
mercury thermometers at equilibrium
in the sunlight [One with Air at Press =P, and the 2nd w / CO2 at Press =P], and you close the blinds — you will see the
thermometer in the CO2 greenhouse retain its temperature longer — not because of any «global warming» type effect, but simply because Air conducts heat to the walls of the greenhouse better than CO2 does.
The National Weather Service's
mercury thermometer had indicated 128 degrees at 4 p.m. Sunday, matching the record for the hottest June day anywhere
in the U.S.
As regards
thermometers, the diameter of the
mercury column with only a + / - 2.5 % deviation
in diameter will yield a 10 % error over the number of increments counted.
Considering days when there is parallel data available
in the temperature band of interest (the claimed - record hot day
in September 2017 measured 37.7 degrees Celsius) the new probe has been found to measure up to 0.4 degrees hotter (e.g. 26 February 2013 the recording for the probe is 37.3, while the
mercury thermometer recorded 36.9 on the A8 form).
In fact, Table 1 shows that for the last month of available parallel measurements the electronic probe (Tmax - Probe) often recorded considerably warmer than the
mercury thermometer (Tmax - LIG).
As a consequence, the data for this period from the
mercury thermometer is not normally distributed, as shown
in Figure 1.
(The abbreviation LIG stands for liquid -
in - glass i.e.
mercury and alcohol
thermometers.
Given electronic probes generally respond more quickly to fluctuations
in air temperature than
mercury thermometers, it follows that this method — instantaneous recordings from an electronic probe — would result
in new temperature maxima under the same weather conditions.
There are many more maximum temperatures measurements available for the electronic probe (n = 948) than for the
mercury thermometer (n = 115), and the distribution is quite different, with a somewhat more normal distribution for the probe data, as shown
in Figure 2.
The BoM, however, claims that temperature measurements from electronic probes are nevertheless «comparable» with measurements from
mercury thermometers because the BoM's «purpose - designed» probes «closely mirror» the behaviour of liquid -
in - glass
thermometers, including the time constant.
A
mercury thermometer is going to register the same reading for a highly radiative gas like CO2 as it is for a barely radiative gas like N2 when they have the same average kinetic energy
in the molecules.
But the key issue has always been achieving consistency with measurements from the
mercury thermometers — so there are no discontinuities
in the temperature record with the transition from
mercury thermometers to temperature probes.
The guide clearly states that readings from platinum resistance
thermometers are not comparable with instant one - second readings from
mercury in glass
thermometers.
For process control the temperature signal must be steady so the control system does not hunt (ie go up and down) 3 /
In industry temperature probes (thermocouples, resistance thermometers, mercury - in - glass etc) need to be shielded by a sheath which normally is high temperature stainless stee
In industry temperature probes (thermocouples, resistance
thermometers,
mercury -
in - glass etc) need to be shielded by a sheath which normally is high temperature stainless stee
in - glass etc) need to be shielded by a sheath which normally is high temperature stainless steel.
Resistance
thermometers used
in industry normally had slower response than
mercury in glass
thermometers.
The
mercury thermometer was invented
in 1724.
In freshman physics lab I built an up - side - down
thermometer (block of parafin with drilled hole for
mercury, hollow glass tube so the
mercury level fell when the temperature rose).
These are comparable to
mercury in glass
thermometers.
So, to ensure there is no discontinuity
in measurements when the transition occurred from
mercury thermometers to electronic probes the maximum and minimum values need to be calculated from one - second readings that have been averaged over at least one minute.
So, to labour Ken's point... of course, electronic probes and
mercury thermometers both go
in Stevenson screens.
Both the
mercury -
in - glass
thermometers, and the electronic sensors, are housed within a Stevenson Screen.
Of course,
mercury thermometers and / or electronic probes (PRTs — platinum resistant
thermometers) go
in Stevenson screens.
Parts of the data may have some elements of the errors that are Gaussian — the example of measurement error
in terms of scale may be Gaussian — after get through the problems of variances
in the
thermometers themselves, which is also a well - known problem for
mercury thermometers vis a vis their manufacturing — but their measured variance from the true temperature is not demonstrably Gaussian, and gets worse the further back you go.
Measurement sites form the core input of the data set for calculating this «global mean temperature» (whatever that actually means), but the measurements from these sites is accurate at best to the nearest 1 degree,
in actual practice around the nearest 5 degrees since many are reading off
mercury thermometers — and this condition increases
in frequency the further back
in time you go.
Dry bulb is the familiar temperature recorded by a
mercury thermometer, and which often reaches 40 °C
in the region each summer.