Memaparkan catatan dengan label invention. Papar semua catatan
Memaparkan catatan dengan label invention. Papar semua catatan

Ahad, 2 Ogos 2020

What we need to know before we buy the robot cleaner

Today robot vacuum can be found at lower prices.

We wish to have fully capable robot to do all the homework so we can enjoy our life to do something more important or just enjoying with life. This beautiful dream might be possible someday, but currently the best robot that can help us to clean up the house is only robot vacuum, and that’s not a bad thing at all.

Robot vacuum has been around for few years already. They are getting better and better in the job that they are doing. To be a robot, they must be capable of doing more than just cleaning, but also other criteria with less monitoring as possible. Their features can range from can measure the rooms that they are cleaning to scheduling the cleanup cleaning jobs.

Why we need robot vacuum?

Robot vacuum can now do more tricky tasks.

When the first robot vacuum was released, the price is quite high with limited functions. The result, not many people are can afford it. As any new technologies, they are not just getting cheaper by time, but also getting better. After few years in the market, they are many manufacturers producing robot vacuum with different features that are also more affordable even for the average income people.

Robot vacuum not only doing their job unsupervised, but also will return to its own charging station before it’s running out of battery. Their small size also allows it to clean hard to reach places like under the furniture and in some cases, they also able to clean the sharp corner of the room. Even though we still need to clean the dust collector and few small maintenance sometimes, but most of the times we can leave it to do the clean up by itself.

In the end, we will always appreciate the time that we can spend on something that is more important such as focusing on your kids. This is the most important reason why we need to consider to have a robot vacuum as out pet. It will keep on busy doing the clean up while allowing us to focus on tending our children. Plus, robot vacuum not as noisy as the old regular vacuum, that will scare the whole household like crazy.

What is the best robot vacuum?

Cleaning under the furniture is a simple task for a tiny robot.

There are many robot vacuums available today with different features. It is good for us to understand some features that available for the particular robot vacuum before deciding to buy it. They are some model that cost more than others, but most robot vacuums can do good basic jobs - that is, cleaning with less monitoring.

These are some best robot vacuum according to an article in Business Insider;


Roborock S6 Robot Vacuum


Eufy RoboVac 11S


iRobot Roomba i7+


Samsung Powerbot R7040


Neato Botvac D7

The good news is, there are many other robot vacuums available out there with more affordable prices that can to the job. Maybe they don’t have any luxurious features, but still be able to do the basic functions of robot vacuum. Yes, we need to focus on the main purposes, those are, cleaning and minimum attention.

Perhaps this is another turning point from the first vacuum cleaner invention. Because since the first invention, vacuum cleaner have made cleaning dust become much easier. Now, the new improvement that we need to accept is, this job will be taken over by a tiny pet machine called robot vacuum.

Ahad, 12 Julai 2020

Yackchal, an ancient refrigerator back in thousand years ago.

Some yackchal is bigger than the other, such as this one in Meybod, Iran. Photo:

Refrigerator use a high amount of electrical energy in order to produce ice. Since the invention of modern refrigerator early 1800's, we never thought that people living in the past were able to have a similar invention in order to keep their food fresh longer.

It's depend on the climate of the area, people learn to preserve their foods in different ways. In the tropic regions, for example, foods are preserved by drying it with salt, or keep it in an acidic solution (turn it into a pickle).

Anyway, long time ago in, middle eastern region such as Persia, they have unique building that called Yackchal, (Persian: یخچال‎ "ice pit"; yakh meaning "ice" and chāl meaning "pit") that works same as refrigerator today. The wonderful thing about this building is, it's using the power of climate and water to trap the cold temperature and store it during the hot summer day.

Yackchal near Kerman, Iran. Photo: wikipedia

The interior of yackchal. Photo:

Even though there are different building that called ice house that used in some countries (Europe or ancient China). Yakhchāl, was built in the areas where the temperature can get really high that require active heat transfer to take place. Compared to modern invention that using a compressor and fan, yakhchāl manipulate the natural energy to produce similar effects.

The construction of yakhchāl was started as soon as 400 BCE. During that time, Persian engineers already able to build this unique building that able to trap the cold temperature during the winter season and retain it until the summer season. It's  not only the shape of the yakhchāl is important, but also the materials used in its construction help it to isolate the heat from get into it.

The wall of yakhchāl is built with unique water-resistant mortar called sarooj, composed of sand, clay, egg whites, lime, goat hair, and ash, that is resistant to heat and at the same time water-impenetrable. While the thickness of the wall will reach up to two meters thick at the base.

Faloodeh, traditional Iranian dessert. Photo:

The most common feature of yakhchāls, is they have access to qanat  (Iranian aqueduct), while sometimes they equipped with a system of bâdgirs (ancient design of windcatchers or wind towers). This additional design help further cool down the temperature to frigid levels during the summer days. So, there are some varieties in its architecture.

The usage of yakhchāls, will allow the ice created in it during the winter to be used throughout the summer. This will help people to keep their foods in it, but also prepare special dessert such as faloodeh, the traditional Persian ice cream.

By mimicking this special architecture, there are many applications can be used in today's world, especially in building more energy efficiency building. Most of our modern inventions relying too much on the usage of electrical energy - that also require to be generated by other sources (such as coals, hydroelectric, solar, wind, thermal and etc.). Imagine if yakhchāl's principal is used instead. How wonderful the future can be?

Sabtu, 30 Jun 2018

Science Museum, London

At the entrance on the Science Museum

The Science Museum is another major attraction in London all together with few other museums that located nearby where it is located. Even though I thought I could not visited on my short visit to London, I actually stopped in this museum for 2 hours to get the ideas how is it looks like.

Same as any other museums, the Science Museum has a long history and how in ended on where it is located now. Start as part of the Royal Society of Arts and the surplus items from the Great Exhibition in 1851 in the same building that today known as Victoria and Albert Museum. It also was known as the Museum of Patents in 1858, and the Patent Office Museum in 1863. As the collection of the Art Museum became larger, the Science Collections were separated on 26 June 1909 and start to be known as the Science Museum.

One of the giant steam engines at the Energy Hall.

The Science Museum, where it is located today was designed by Sir Richard Allison, and open in a few stages over the period of 1919-28. The construction that has begun in 1913 was temporarily halted by the World War 1. However, it was resumed and keep on expanding with additional blocks to accommodate more galleries until 1980. The last additional Wellcome Wing was added in 2000 to extend it to the Queen’s Gate.

Same as many other major museums in London, this museum is very big. It is important to study a little bit about the museum before the visit. If there are any specific things that you want to see, it is more important to know where it is located (which gallery and which floor). It is also important to check on their website for gallery closures to make sure the item that you want to see is open to the public – or else you can contact the museum to get a permission.

Material used in producing products.

Interesting Invention - what is it?

On my short visit to this museum, what I can see is the different approaches of presentation in the exhibition. There are so many items in every gallery (and most of them are so important in order for us to understand about the development of certain technologies). There are few places where I wish more information to be provided (however, I can do extra research about it from the internet or some of it already available through this museum own online resources).

There are many interesting features available that also adds different experiences here in the Science Museum as there are many hands-on items to the IMAX 3D theatre. Different styles of presentation in order to enhance understanding of the viewers for the related topics. All of these features make it suitable for visitor of all ages - and make it guaranteed suitable for a family visit.

Historical item.

Time gallery exhibition.

There are many galleries available with different topics and different kind of approaches and for more details you can see it from this link. As I only visited a small part of the museum, I can’t tell the details of the whole museum (but base from the part that I visited) and at the same time I did go through their website to know more about this museum - and that’s how I know they have good online resources.

I do love science as I do love nature (as I spend more time at the Natural History Museum) and I wish to spend a whole day here if I can - maybe in my next visit. Here I also have some photos I posted at my fanpage. There is also few other post that you might find interesting of my visit to KewGardens, NaturalHistory Museum and Royal Institution.

If you are in London, don’t miss your chance to visit this museum as this is one of important attractions – located in the main attraction area. You also can make your donation to the museum, donate an object, join volunteering and many more to contribute to this museum. All the details can be found in their website If there is any information you want to add to this article please feel free to write in the comment or send it to me through the request form (only available on the web view).

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Ahad, 10 Jun 2018

Royal Institution, London

The building of Royal Institution in the Albemarle Street.

There are lots of things that I want to do when I visited London (but I only have a short period of time). After taking a look at several places around the city, it was decided that other important places to visit in London will be Royal Institution of Great Britain (often abbreviated as the Royal Institution or Ri). There is another different organization that known as Royal Society - that actually different, as Royal Society more dedicated as learned society.

There are few important things that we need to visit this special place; for its histories of science development and also for notorious remarkable yearly events that introduce by Royal Institution that known as Royal Institution Christmas Lectures. Since my visit was in May, I can only visit for the regular lectures that also interesting. The lectures held in its historical lecture hall; where Michael Faraday first introduced in 1825. Today, you need to become a member and then book in advance for the ticket ballot – it’s more like a lottery now!

The invention of Davy lamp safe coal miner’s life.

Different type of lamps.

The Royal Institution was founded in 1799 by the leading British scientist of that time. The main purposes of the establishment are for diffusing the knowledge, and facilitating the general introduction, of useful mechanical inventions and improvements; and for teaching, by courses of philosophical lectures and experiments, the application of science to the common purposes of life.

The other thing that really inspiring me here is the Michael Faraday’s Lab in the Faraday Museum in the basement of the Royal Institution Building in the Albemarle Street. This is where Michael Faraday conducted his research about electromagnetism and electrochemistry that leads to many other discoveries. The truth is, his lab was not as good as the lab that we have today, but the impact of his research can be seen in every electrical and electronics devices today.

The Michael Faraday's lab in the basement of the building.

Status of important RI figures.

Thermos flask invented by James Dewer.

Michael Faraday was one of many other scientists and researchers from Royal Institution that contributed countless science knowledge that transform the way how our lives today. The invention of Davy lamp safe many lives of coal miners. While many other inventions and knowledge shared improved science and technology drastically.

Other than the museum, we still can walk around the historical buildings – where there are rooms that use as libraries, the alley that also located books and showcases the presentation by previous researchers explaining about electromagnetics, chemicals, anatomy and so on. There are many other things that happen here (at the time of my visit). For more details of the events, you can visit their website to get the tickets (for lectures); the admission to the Faraday Museum is free.

Historic lecture hall.

Same as my previous visit to Kew Gardens and Natural History Museum, my visit to Royal Institution has also come together with its own photo collection at my fanpage; make sure you visit it. It’s supposed to be another main attraction here in London since its contribution to advancements in human science and technology. All I can do is sharing part of my visit and hopefully it will inspire others to know more about it.

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Ahad, 18 Februari 2018

New Fabric From Orange Fibre

Producing orange fibre to safe cost of disposal orange's waste. photo by:

Most of modern fabrics are produce by synthetic materials and rarely new materials came from organic materials (as we already stick with few of the traditional materials as we known such as cotton, silk, linen, wool, jute, pineapple leaves, lotus silk and etc.). It shows that many other organic materials consist potential fibre to be use in producing fabric – perhaps need to go through different process.

At least that’s what student Adriana Santanocito and her friend Enrica Arena tried to do and successfully produced what they called Orange Fibre. Adriana was studying textiles at Politecnico of Milan, when she first thought about to produce the fabric from orange fibre. This idea came when she thought about how scientist can produced fabric out of milk and rice. Then she also thought about the problem of the citrus waste back at her home Sicily.

Orange waste. photo by: 

The sample of Orange Fabric. photo by:

We can produce fabric with cellulose produced by plants that generally known as rayon. The fabric that made of bamboo is actually rayon. Still there’s nothing bad about it. In fact rayon can be produced at cheaper price, safe lots of energy and farmland to grow fibre plants such as cotton, flax, hemp, jute, nettles, yucca and many others.

By producing orange fabric, Adriana helps to make sure the orange waste used for something more useful rather than to left it rotten and safe the huge amount of money with the disposal cost. Instead of using new trees to produce pulp, why not using the cellulose from other waste product such as in this case – she did a very good job.

Bamboo fibre, another example of fibre produce by plant. photo by: materia

Rayon allows fabrics price become cheaper as the plants fibre produced by few types of plants are harder to produce. It also allow wider range usage of fabrics for applications from tea bags, to fabrics for high quality dress. The only things that we concern about rayon production is the usage of harmful chemicals and their effects to the workers and environmental effects (when the waste management not been carried properly).

Orange fabric is another example of creative idea on how we can safe resources that before treat as waste. As we know that in ancient times, clothes are afforded only by the riches and they are very hard to produce. With new materials engineering will allow us to explore more possibilities to get better materials that are not just cheaper but also good for the nature.

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Rabu, 10 Januari 2018

Complicated Machines With Lego

Fully functional machine - replicate the Antikythera Mechanism.

Lego already known as one of the most important toys to inspires kids to develop their creativity. By building easy structures such as home, car, building, and many other objects they will begin to develop something more complicated such as machine prototype. Perhaps Lego not only important with kids for creativity but adult too. This is true for Andrew Carol.

Andrew Carol has passion for mechanical devices and re-invented it using Lego pieces. One of the most popular machine he constructed was Antikythera Mechanism based on the real machine found by divers in 1908 off the coast of Antikythera. It took us almost 100 years to know what exactly it is, until examination using X-Rays and CAT scans revealing the internal components inside it.

The original piece of Antikythera Mechanism.

The gears on Lego version created by Andrew Carol.

Gears functions on the machines explained in the video.

Back to Andrew Carol and his Lego hobbies; he also invented few more complicated machines using Lego pieces includes the 3rd generation of Charles Babbage Difference Engine. More of his work and hobbies can be found here on this website. From the website he also shared more details about how those machines works complete with videos.

Well it tells us that it is still not too late for everyone to play with this wonderful toy. Maybe we can come out with more brilliant ideas if we work together with the whole family.

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Ahad, 3 September 2017

Mechanical Calculator Another Marvelous Invention

Curta mechanical calculator, one of the marvelous mechanical calculators ever invented.

Why we need to take a look at mechanical calculator when today the digital calculator can works better? Well, the invention of mechanical calculator itself is the result of complicated calculation and mechanical precision, so you can think how useful it was before the digital edge.

Before we go to more complicated mechanical calculator we might want to know more about the simple calculation apparatus such as abacus that had been used in ancient China. This device has been used until today in order to teach kid to know the concept of additional and subtraction.

The advancement of mathematical knowledge requires human to do more repetitive calculation, in large numbers and more complicated task. To safe time on calculations instead of the ideas itself such as in astrology and geometries, the calculation apparatus are very important.

The Napier's bones.

Page from a 1619 book of mathematical tables by Matthias Bernegger, showing values for the sine, tangent and secant trigonometric functions.

A typical ten-inch student slide rule.

There were many types of mechanical calculation apparatus since ancient times. Some of them showing of the result of the calculation rather than input numbers such as the Antikythera mechanism or simplification such as for the astrolabes.

Back to mechanical calculator machine that use specifically to calculate numbers, few of them being invented since as early as 17th century. One of the best inventions was Pascal's calculator, invented by Blaise Pascal in 1642. On the same century there were few other tools invented like Napier's bones, logarithmic tables and the slide rule. We are all wondering what are those things are!

In 18th century more complicated mechanical calculator was invented by Giovanni Poleni in 1709. In fact there were many others trying to invent calculation machines such as German Johann Helfrich Müller, French Lépine, German Antonius Braun, French Hillerin de Boistissandeau, German Philipp Matthäus Hahn, and English Lord Stanhope. Maybe there were few others that not documented.

Perhaps the best mechanical calculator ever invented was "Difference Engine No. 1," the invention of Charles Babbage in 1822. The machine has more capabilities of calculating up to seven numbers up to 31 decimal digits each. It also the first calculating machine that comes with printer. The project was abandoned in 1842. Anyway the working replica was built in 2005 by London’s Science Museum.

The working difference engine, built a century and a half based on Charles Babbage's design on display at London Science Museum.

Four of Pascal's calculators and one machine built by Lépine in 1725, display at Musée des Arts et Métiers.
Curta Type I, on display at the Musée des Arts et Métiers, Paris.

Yes, there were many other working mechanical calculators invented before the digital edge provides us with cheaper pocket calculator. The pocket version of mechanical calculator knows as Curta was invented by Curt Herzstark in the 1930s in Vienna, Austria. Until today this mechanical calculator still become one of the favorite for mechanical calculator’s fan to be part of their collection. Some fan even rebuilt this calculator using 3D printer such as the one bought by Adam Savage in his video and we all so envy with it.

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