Some researchers consider the invention to be the world's oldest “calculator". In China, people use abacuses to do calculations for thousands of years before electronics calculators became popular.The abacus is usually made of wood. It has many beads (珠子). Each bead above the horizontal(...
But first, let's turn the clock back to, I don't know, two days ago when it was still 2024, and now it's 2025. Let's talk about financial regrets from 2024. We've got this survey conducted for NerdWallet by The Harris Poll. Let's start with how many of us...
This calculator helps you calculate how many hours between two days, for example, between Monday 8 a.m and Wednesday, 6 p.m. If you enter the day and time for each of the two time points, it will show you how many hours (and minutes, if you wish) between these. In my example, ...
My father was a pilot, I became a pilot, and my son Danny became a pilot and launched Epic Flight Academy.Flying seems to be in our blood. I ferried countless aircraft for Cessna during the years I worked there. This was a pilot job I loved. While many pilots only want to fly for...
It also meant that not many people could use radio telephones -- there just were not enough channels. The genius of the cellular system is the division of a city into small cells. This allows extensive frequency reuse across a city, so that millions of people can use cell phones ...
Many providers offer green energy tariffs where at least some, if not all, of the energy you use comes from renewable sources. You should be able to check their fuel mix – i.e. the percentage make-up of how their energy is generated – on the supplier’s website. ...
1000kcal a day, you'll still have 400kcal of joy left. Minus vegetables. Always eat lots of vegetables. Broccoli is underrated. High protein diets usually lacks in fiber, so you'll have to eat some dark bread or loads of vegetables, or your stomach will disagree with you in many ways...
IELTS score's validity is for the period of two years. Check out the common misconceptions about the IELTS validity.
The author’s now-ancient Therm-a-Rest – purchased many years ago at a used-gear shop in Seattle, WA. Still going strong! One final comment – I love the generosity of the backpacking community, and the ability to share gear with friends. Another way to pursue frugality in backpacking ...
In the old days, calculating the CR meant getting out the slide rule (really long time ago) or working through a set of formulas on a hand-held calculator. Today, finding online calculators that quickly spit out the results is only Google click away. But as the old saying goes, a compu...