Two different ways to design a better fire extinguisher

Since we spend most of our time in buildings, we are literally surrounded by fire extinguishers. It consists of a hand-held cylindrical pressure vessel containing an agent which can be discharged to extinguish a fire (Wikipedia). In general, we do not pay attention to them until needed. For me, I have never used any fire extinguisher…

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Standing desk: New way to work

I suffered from minor shoulder – and wrist pain for a long time. In order to lessen the pain, I decided to train my left hand for using the computer mouse a few years back. Certainly, using mouse with my left hand was very challenging in the first couple of years. However, 3-year of intensive practice…

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Reducing eye pain in a shopping mall

In a large scale indoor space, people need breaks to reduce pains. In a shopping mall or at an exhibition, for example, people often take micro breaks on a bench to reduce the pains in the legs or feet. At a recent exhibition, I met a relatively new solution for the pains that have been little articulated: pains in…

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Electronic Vehicle Charging Station in Seoul

An EV charging station stands in the parking lot at my university. Probably, the department of automotive engineering installed it and owns the electronic vehicle. My first impression about them is that they do not interfere the traffic flow inside the busy parking lot because the charging station occupies a tiny space and it charges…

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Pillow preference

Pillows are important for a good night’s sleep. Regardless of whether innate or learned, people have their own preferences for the firmness of pillow. When they go to hotels or visit their friends’ places, however, they cannot help but accept the given pillows. Some of my friends who have a strong preference carry their air pillows.…

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