Author: Rauf Aliev

Bought and assembled an oscilloscope. For experiments. The kit costs thirty bucks

I always thought that when you shake a bottle of cola or champagne, the pressure inside the bottle doesn’t change at all. I just stumbled upon an argument and delved into the details. It turned out to be almost true. The “explosion” occurs due to the sudden expansion and surfacing of bubbles. When shaken, the carbon dioxide bubbles are submerged in water, and when the bottle is opened, they suddenly increase in size and surface (since there is a pressure difference) pushing some cola or champagne outside. Shaken cola or champagne sinks some of it to the bottom, causing them to rush to the surface too much upon opening, leading to unusually strong foaming. When you shake champagne, these bubbles are not visible because they are too small (the gas dissolved in the liquid occupies less volume), plus a small portion of carbon dioxide under pressure turns into a liquid state. But there are several interesting points. To avoid overloading the post – those interested are directed to the “Conclusions” section of the article linked, and for the especially curious, the article itself is quite intriguing.

This weekend – an important and, I hope, interesting update on my blog about SAP Hybris:

A detailed comparison of Oracle Commerce (ex-ATG) with SAP Hybris Commerce, including Endeca and technical aspects, both On-Premise and cloud versions.

Such a comparison has never been done anywhere on the web before. I tried to be objective in all aspects.

The article is huge, sorry, no conclusions will be drawn 🙂

https://hybrismart.com/2018/05/20/a-detailed-comparison-oracle-commerce-cloud-and-on-premise-aka-atg-vs-sap-hybris-commerce-cloud/

It takes five minutes to heat water from 20 to 100 degrees. But for some reason, there’s no device capable of cooling a can of beer from the same 20 to 5 degrees (just 15 degrees down) faster than 40 minutes (in the freezer). What kind of injustice is this? By the way, physicists, please explain why. If possible – such a device needs to be released urgently.

I am going to watch the last episode of the first season of Handmaid’s Tale. Such an awesome series.

It’s fascinating how precisely our speech apparatus works and how the brain recognizes sounds. Take, for example, the syllables “па” and “ба.”

The difference between “па” and “ба” is merely in the timing of the sound delay before the vowel: if the delay is longer, we hear “п”, if shorter – “б”. Place your hand on your throat near the vocal cords: when saying “ба,” the lips part simultaneously with the vibration of the cords; when saying “па,” the vibration is delayed.

The graph shows that the difference is generated in the region of 20-30 ms delay

I wonder why various Amazons aren’t interested in customers’ hobbies and interests directly, but try to deduce these only through activity analysis? After all, you could simply ask.

For example, why can’t I input my interests and receive special offers if they align with those interests? It’s very simple and beneficial for everyone, isn’t it?

Of course, few online shop users would bother to specify these in their profile. But you could unobtrusively ask during interactions with the website and enrich the profile with the information obtained.

Also, there’s a lack of a guide for product groups. If I were Amazon, I would consider buying such guides (as a service) from third-party suppliers.

Could you please provide the content of that file so I can assist you with the translation?

We had a little rain the day before yesterday https://www.youtube.com/watch?v=PXehPGfYikE

Why doesn’t anyone offer smart speakers (Amazon, Google, Apple) for free rental for a week or two? It’s quite hard to break them, and you can include high reliability in the contract with no wear and tear, but every nth family will refuse to return them and will sign up for a loan. And those who return them will be divided into “didn’t like it, it’s rubbish” and “cool, but not ready to buy yet”. You can work with both groups later, they are clearly better than the rest of the gray mass. Half of those who took them will refuse because of laziness (the money is not significant for them, children and wife are happy, and they’re reluctant to return them).

A ready-made idea for a startup, by the way.

In our “neighborhood” they’ve installed these devices for traffic monitoring and data collection for planning and developing road infrastructure. I’ve never seen them anywhere before, interesting. The equipment is manufactured by the company metrocount. I think they count not only the number of cars and their direction but also their speed.