Band Aid Dilemma

What is a refractometer and what can it be used for?

 

Most people feel clueless when reading science books because they don’t find the information engaging and easy to read. After years of trying to get to the bottom of it, I’ve managed to develop my passion for this beautiful art and I want to share with you a little bit of my knowledge. Since I know how difficult it is to understand these complicated terms, I did my best to simplify the process and leave only the essential regarding the refractometer and its usages.

A refractometer is a useful but also simple tool used for measuring the extent to which light is either bent or retracted when moving through a certain type of substance. When light enters a liquid it automatically changes direction. This process is called refraction, hence the name of the refractometer.

The reason it provides accurate results is that light travels at different velocities, depending on the environment. The most important aspect is that it requires only a few drops of liquid and can be used as lab equipment for various industries such as food, agriculture, chemical industries, and manufacturing.

 

Even though refractometers are all the same, they do differ in terms of their optical part. Each model features a special scale where you can see the results instantly or you need to calculate the results based on the values measured by a versatile refractometer.

The refractometer is quite easy to handle and the measurements are taken rapidly. If you place a few drops of liquid on the prism and you press them without using force, the bubbles and the air are eliminated. Then, look through the eyepiece ad aim to the light. You’ll see a combination of a white and blue boundary which provides you the value of the measurement.

As far as their utility, refractometers are specially designed for a multitude of operations that include measuring liquids. Most of them use oils or water-based liquids, translucent solids, and gases. In agriculture, refractometers require the refractive light that passes through the plant sap in order to get nutrient levels.

Also, refractometers come in handy for providing drug diagnosis, for various operations in the veterinary medicine field, or got the upkeep of aquariums. Refractometers come in four main types, such as traditional handheld, digital handheld, laboratory, and inline process refractometers. Furthermore, automatic refractometers have been developed. These units are microprocessor-controlled electronic instruments that can be combined with other types of measuring devices.

There are tools that feature universal units on their scale. These are the refractometers for measuring the refractive index and the refractometer with Brix scale. One major advantage this type of refractometers has is that it allows you to measure any kind of liquid if you know how to convert the measured value to a known characteristic.

 

 

 

Home Lab: Exciting Experiments by Robert Winston Review

 

I’ve always been passionate about science, although I have to admit that I wasn’t the same while I was growing up. School was always a pain, particularly because many of my science teachers weren’t particularly gifted, and so they found it very hard to explain to us kids the wonders of the world around us.

I did most of my learning through reading. Each time I found out about a new book about experiments you could do at home, I raised some money and bought it. These days, I own a Kindle, so it’s way more convenient for me to find out about new books. Plus, they are much cheaper compared to their hardcover counterparts, which is always a plus.

 

Home Lab: Exciting Experiments, by Robert Winston was a book I came across while searching for one that I could use with my nephew. It’s unfortunate that kids nowadays don’t have the opportunities that we used to have back in the day, which is to say that they spend more of their time in front of a display than they would outside, actually tasting freedom.

My nephew is six-years-old, so there are many things that still amaze him, despite the fact that he is intelligent and resourceful. The coolest thing about this book is that it is packed with a myriad of experiments. Each of them is thoroughly explained thanks to a set of detailed instructions so that both you and the child get to understand what you are supposed to do.

We all know how frustrating scientific terminology can really be, even for an adult. It’s pretty frustrating for a kid to find him or herself feeling baffled because they don’t know what to do. Home Lab: Exciting Experiments for Budding Scientists is one of those books that doesn’t get you in trouble. It is detailed, simple to read and grasp, and it comes with an impressive number of pictures and diagrams that make everything a lot easier than you’d initially think.

Both the instructions and the colorful layout are highly spoken of by those who have purchased the book for their children. So, I’m not the only one. Of course, I had to do my homework before buying the book because I wasn’t just willing to pick one and get it over with. I actually wanted something that my nephew could use, preferably in my presence or with my help. I love giving him a hand with his science projects, so I always make sure to make some time for him during the weekends.

In short, if you are looking for a fun science book for the young ones, perhaps you should give a shot to Home Lab: Exciting Experiments.

 

 

 

What’s a magnetic stirrer and what can it be used for?

 

Lab equipment can be fascinating in its way. Different terms used may sound like sci-fi lingo for people who don’t work in a scientific field, but the truth is the hardware used in labs is not that complicated, and I think that everyone could get a clearer idea of what it does, with great ease. In this post, I want to tell you all about a magnetic stirrer and how can be used.

 

First thing first, what is a magnetic stirrer?

This piece of equipment is used for creating a rotating magnetic field. Its design is not very complicated, and it consists of a small magnet and a stand on which the magnet is mounted. The magnet rotates, thus creating the field mentioned earlier.

A typical design involves the magnet being coated with plastic. It may make the magnetic stirrer look like something different than it is, but I can tell you that it is nothing more complicated than a rotating magnet and nothing more.

 

 

How can it be used?

First of all, I can tell you that a magnetic stirrer is quite a small piece of equipment, which is why it can be used with so much ease by anyone working in a lab. There are certain things you should keep in mind when using such a device.

By creating a rotating magnetic field, it can be utilized for establishing properties of a fluid sample. Because the magnet is inert, it does not let contamination to happen, so you will be able to keep everything clean when working on your experiments.

There is another significant benefit to bear in mind. You can use a magnetic stirrer for prolonged periods of time, without fail, and that can be very handy when you require more hours for results to appear. A lot of labs use overnight mixing, to provide results that are accurate and timely.

 


A few other things you may like to know about magnetic stirrers

They are mainly used in chemistry labs and biology related experiments. When you need to mix various components, whether they are liquid or solid, and obtain what lab employees call a homogeneous mixture, you will find a magnetic stirrer an indispensable tool.

The liquid will be agitated with the help of the stirrer, and this will improve the quality of the mixture, without the risk of contamination. Here you can read more about this.

 

 

Taking care of your mattress – my advice

The good quality of a new mattress isn’t enough to protect it from fast wear, the key rather being a commitment to taking care of it throughout its lifespan. Here are a few tips on how to maintain your mattress in a good state.

The most common cause for mattress damage are the spills and splatters of all sorts. The easiest and most effective way to keep them under control is to protect your mattress with a waterproof cover, that’s going to need periodic cleaning, but will preserve your investment. Having a cover won’t just keep food and drinks away, but will also help fight the premature sagging that appears because of perspiration, oils, and environment humidity. However, you must keep in mind that the mattress also needs proper ventilation, so a cover must not be considered an everlasting accessory, but should be removed once in awhile.

If the accident already occurred, dry-cleaning the mattress is totally prohibited. The chemicals used in this process could permanently damage the cover fabric and even the filling.

Some baking soda spread right on top of the mattress will absorb humidity and expel odors. You can give it around half an hour to work its magic and then use the vacuum cleaner to collect it.

Another problem that occurs after some time is the appearance of bumps and depressions within the mattress after sitting too often on just certain points. This can be ameliorated by flipping over the mattress, and rotating it head-to-toe. This will even out the pressure inflicted upon it over time and will prolong its life.

Frequent vacuuming is another secret to maintain the mattress clean and less prone to damage, even if it doesn’t seems to be important. Dust and dirt are a continuous threat to its life and the often you evacuate them, the better.

A good quality mattress won’t last long if it’s not well supported. I recommend you to make sure the shape and size of the mattress is consistent with the box spring or bed frame you own, so that no unnecessary pressure or bending damages it.

Finally, a small memento for those of you with too much energy. The mattress has a certain purpose and shouldn’t be used outside of it. Allowing your kids to use it as a trampoline is likely to have you replace it much sooner than you should.