How to Find Your Best Thermometer
A thermometer is a device that we all know very well and frequently use. It measures temperature but we know a lot of different thermometers which have different functions (from measuring our own temperature for health purposes, measuring the outside or inside temperature of the air, to measuring the perfect temperature of our food). Here are a few of them that are currently very popular to purchase:
A thermometer has a lot of different goals in several industries – it is a very important device for regulating and controlling processes, it also has a lot of crucial roles in scientific research and medicine. The most popular uses for direct consumers are for food and health purposes. We can also measure the temperature in the house or outside.
Not all thermometers operate in the same way. Some use the thermal expansion of liquids and solids with temperature in order to work, others use the change in pressure of the gas which occurs with temperature change – either cooling or heating. We also have radiation type thermometers which are extremely popular – infrared ones. They measure the infrared energy which is emitted by an object. These thermometers are very popular because the user does not have to touch the object in any way – the measurement happens without it!
Alcohol and mercury are frequently used in thermometers – the reason is that even a very small change in the temperature does not go unnoticed.
It is very interesting that even ancient Greek philosophers that lived thousands of years ago already knew some of the principles that are used in thermometers.
- 1 How to Find Your Best Thermometer
Every thermometer has two important elements:
- a sensor that measures temperature (an example would be mercury in glass located in a bulb) – normally some kind of a change (physical) must happen in the device whenever there is a change in the temperature.
- a measurement scale of some type – this can be widely different depending on the type but the device must be able to convert a physical change that happened because of the change in temperature to something that is easily visible and readable to us. A classic example of this is a numerical scale of the mercury in glass.
In 1866, Sir Thomas Clifford Allbutt (1836 to 1925) invented the clinical thermometer which produced a body temperature reading in five minutes as opposed to twenty.
While an individual is able to measure degrees of hotness, the readings on two thermometers cannot be compared unless they both show an agreed scale. Internationally agreed temperature scales are designed to approximate this closely, based on interpolating thermometers and points. The most recent temperature scale is the international temperature scale of 1990. It extends from 0.65 K (−272.5 °C; −458.5 °F) to approximately 1,358 K (1,085 °C; 1,985 °F).
In 1714 scientist and creator Daniel Gabriel Fahrenheit invented the first thermometer, using mercury instead of water and alcohol mixtures. He could do this because he fabricated them, using mercury (that has a high coefficient of expansion) for the first time and the quality of his production could provide a finer scale and higher reproducibility, resulting in its general adoption. In 1742, Anders Celsius (1701 to 1744) proposed a scale with zero in the boiling point and 100 degrees at the freezing point of water, though the scale that now bears his name has them the other way around.
However, each inventor and each of them were unique in their own way – there was no standard scale. In 1665 Christiaan Huygens (1629–1695) indicated using the melting and boiling points of water as norms, and in 1694 Carlo Renaldini (1615–1698) proposed using them as fixed points on a worldwide scale.
Authors have attributed Hero of Alexandria with the invention of the thermometer. It was not a single invention but an evolution. Hero of Alexandria (10 to 70) knew that certain substances, for example, air, expand and contract and explained an event where a closed tube partly filled with air had its end in a container of water. The expansion and contraction of the air caused the position of the water/air to move along the tube.
The term (in its French form) first appeared in 1624 at La Récréation Mathématique by J. Leurechon.
The first person to put a scale on a thermoscope is variously believed to be Francesco Sagredo (1571 to 1620) or Santorio Santorio in about 1611 to 1613.
A mechanism has been utilized to show that the hotness and coldness of the air with a tube in which the expansion and contraction of the gas control the water level. These devices were developed by European scientists in the 17th and 16th centuries. One of the more famous ones is Galileo Galilei – we all know Galileo nowadays. Because of this, devices were demonstrated to produce this effect reliably, and the term thermoscope was adopted since it reflected the changes in sensible heat (the idea of temperature was yet to arise). The difference between a thermoscope and a thermometer is that the latter includes a scale. Though Galileo is thought to be the inventor of the thermometer, what he produced were thermoscopes.
Make sure the thermometer tip is clean. Wash it with alcohol or water and dry it.
Fever is a frequent occurrence in children – it indicates that the body is trying to fight off some kind of cold or infection. It can be warm to the touch if your child has a fever. Since being bundled in blankets or clothes might cause fever-like symptoms, taking your child’s temperature is the right choice!
Some can offer a reading in about 30 to 60 seconds. Glass basal, on the other hand, can take up to 5 minutes to provide a reading. Digitals are also more durable and difficult to break and some will store your fever in the event if you want to instantly chart it. Clean it again and store it.
Kinds of Thermometers
Use one hand to keep the baby still. Keep your baby from squirming as much as possible so that it does not slide further out or in.
Digital thermometers are quick, fairly accurate, and good to use when your baby is too young to sit still. Make sure the sensor is close to the temporal artery (between the outside edge of the eye and the hairline). Make sure that you get an accurate reading.
The typical fever thermometers measure to the tenths place of a degree, basal measure to the hundredth place. This increment provides a more precise measure, better for measuring the changes in body temperature.
For children younger than 3 months, rectal thermometers provide the most accurate readings, but they can also be used for children older than 3 months. Taking a temperature is quick and effortless. Follow these steps:
These need more time than other to read, and they’re better for children who have the ability to sit and close their mouths. Oral thermometers can be used as underarm thermometers – this is a noninvasive way to measure a fever, but be aware that the temperature under the arm is lower than the temperature in the body’s core. Lift your baby’s legs (knees to chest) as though you were changing a diaper.
For a child over 3 months old, you may choose from five distinct types:
Digital basal are also more reliable to track this variance than even glass basal thermometers. A reading is easier and more accurate to read than a traditional glass, giving the reading is essential to this method.
For the average woman, the standard basal body temperature lies between 96 and 99 degrees Fahrenheit. On the first day of ovulation, this temperature slightly rises for about half a degree. This increase in temperature, induced by a growth in the production of the progesterone hormone, creates a warmer and lusher environment for conception. They are accurate enough to measure this small temperature rise, allowing for an affordable and low-tech way to track ovulation.
Although there is no particular way to prevent a fever, keeping your child healthy is critical. Fruits and vegetables can boost immune systems and fight infection and can reduce the risk of sickness.
The basal body temperature, a measure of the normal temperature of an ordinary person upon waking, rises as a result of hormonal changes during ovulation. Ultra-sensitive basal thermometers are capable of monitoring these changes. Recording and taking your body temperature is a simple and easy method to monitor, allowing you to pinpoint the occurrence of ovulation.
Digital ear is quick and accurate. Pull on the ear a little to position the thermometer. Since they’re so quick, these are a great option for little ones, but the end has to be inserted for an accurate reading.
Wearable may be used continuously and don’t require awakening or disturbing the child. Their ability to monitor the fever can be helpful. Set your baby face up on the table.
Although many fevers run their course without medical intervention, call your doctor right away if your baby is under 3 months and has a rectal thermometer reading of over 101.4°. To the physician, any temperature above 101 ° warrants a call for the little ones between 3 to 6 months. No matter the age, call the doctor if your baby has a fever over 104°.
Treatment for Fever
Serve Popsicles and cold foods for relaxation. Give your child acetaminophen (Children’s Tylenol) or ibuprofen (Children’s Advil).
Insert the thermometer just a half-inch to an inch. Stop inserting the thermometer if there’s any resistance. Pushing on the thermometer far in could hurt your child’s rectum.
Forehead thermometer strips are not as accurate as thermometers, but they are the least dangerous and disruptive way to take a child’s temperature. Hold the strip on the forehead until the color registers along the strip. Put a little petroleum jelly on the thermometer tip. This makes it much easier to insert.
Set the child in light clothing and use just one blanket.
Understanding how to use a thermometer to measure your child’s fever is vital. Temperatures can be taken on the body with various thermometers – whichever type of thermometer you use, make certain to read the directions carefully. They all require positioning to get the most accurate reading. Although a lot of fevers run their course make sure to understand your health care provider if your child’s fever is greater than 102° for more than 24 hours or if the fever is higher than 104°. For babies under 3 months, call the doctor if the fever is over 100.4°.
Basal vs. Regular
Spread your child’s buttock cheeks apart and insert into the rectum.
Due to the nature concerning basal body temperature, this method will only be true if the temperature is taken on waking and at a consistent time. Variance at the time each day that the temperature is taken could cause changes in the results and comparison between your temperatures from day to day. The best time to take your temperature is right after waking up, before even getting out of bed. The best way is to keep the thermometer within reach on a bedside table, allowing you to access it.
Taking Temperatures with a Rectal Thermometer
A basal can be used to chart a woman’s basal body temperature, thus allowing them to forecast their fertile period or ovulation. Although there is a multitude of basal and digital basal thermometers are your best bet. Some are also include basal body temperature graphs for the user to monitor their temperature over several cycles.
Never give your child aspirin to treat a fever because it can cause a rare but serious disease called Reye’s syndrome.
An extremely popular is the Galileo.
Galileo Galilei, an Italian engineer, mathematician and astronomer have discovered the principles behind this type of a thermometer. It is based on the fact that the density of liquid changes is in direct proportion to its temperature. The thermoscope is also based on the same principle.
The Galileo is made of a glass cylinder that has to be sealed and contains a clear liquid and quite a few glass vessels which vary in mass.
Floats fall or rise based on the weight and the density of the liquid when the temperature changes.
The device uses buoyancy as the primary principle in order to work –