A thermometer is not kept in direct sunlight because the temperature needed to be recorded by the thermometer is of the air and not the rays of the sun.
Air temperature is taken in the shade because sunlight falling on the instrument, the thermometer, can cause the reading to be incorrectly high.
The best time to take temperature is right when you wake up. This is because your body has not been doing anything that might raise temperature yet.
See this website in the link below
To calculate the delta temperature, you will take the difference between the final and initial temperature.
The main difference between a flyby spacecraft and an orbiter is the guidance computer programming: which causes a flyby to go by the planet and take pictures and other readings allowed in the limited time of the single pass, while an orbiter is captured into an orbit about the planet where it has a much longer period to take pictures and other readings.
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in a shade
There is no straight forward answer for this, Newton described this in his Law of Cooling. The rate of cooling (change in temperature) is proportional to the difference in temperature. Here is an example, let's say you shade a area on the ground, when you remove the shade and expose it to the sun, the rate of cooling will be rapid at first because the difference between the shaded area and the sun's radiative temperature are greatest. Then the temperature will begin to level off as the two temperatures begin to reach an equilibrium.
when is the best time of the day to take an baby body temperature?
Take readings of people hearts.
Most planes fly in the troposphere anyway but without an altimeter you could take temperature readings as those vary by altitude.
The best time to take temperature is right when you wake up. This is because your body has not been doing anything that might raise temperature yet.
The best method is to use a pyrometer.
taking it rectally
as close to the air temperature outside. then no cooling or heating of air has to take place
digital thermometer is the best way to take temperature of newbornaxillary temperature taking has advantage over rectal(rectal temperature taking is contraindication in infant less than one month or premature)oral temperature(oral temperature is contraindicated for child less than 2 year old) and tympanic tempereture(tympanic temperature is contraindicated in draining ear or premature infant of small ear canal).
Basically, so that if one reading is skewed due to human error or other, then there will be other readings to compensate.
Its essentially the same thing, temperatures are being recorded with time. The data logger automatically takes the temperature readings at a given time step, and the data can then be uploaded easily and manipulated. More readings can be taken at smaller increments, and over long periods of time without the need for constant observation. Taking the readings manually with a thermometer may introduce more human error, and will generally take more effort and concentration. Either method is good though, though there are some disadvantages and advantages to both.