Science

  • Dangerous fireworks: are nitrate rocks dangerous?

    Dangerous fireworks. For example, nitrate rocks are dangerous. Fireworks come in all shapes and sizes, but in most cases it produces many beautiful pictures and fun. Yet there are also dangers to fireworks. If that is not ignited properly, for example. Or if people buy products that are no good or even worse if people themselves fuse together. ...
  • Winter, when does it start - December 20, 21 or 22

    The winter begins on December 21, we learn that at school. Every season starts on the 21st: 21 March, 21 June, 21 September and also 21 December. That is nice to remember and roughly true, but not exactly. Every year each season starts at its own time. The start of the winter is shifting: for example, it started on December 22 in 2015 and starts on December 21 in 2016 and 2017. ...
  • Top ten coldest winters in the Netherlands, the statistics

    The weather forecast keeps the average Netherlands busy. Every year we therefore ask ourselves whether we are dealing with a severe winter, although the chance of a severe winter in the Netherlands is relatively small. According to the Köppen system, the Netherlands has to deal with a moderate sea climate, which means relatively mild winters, mild summers and rainfall throughout the year. ...
  • Spring - when does it start - March 19, 20 or 21

    Spring, spring: it is a wonderful season. The season starts on March 21, we learn at school, but this date needs some nuance. It is not always on the 21st. In fact, until 2101 the spring begins on March 20 and sometimes even on March 19. In the spring it slowly gets warmer and nature becomes greener, although nature does not always adhere to the man-made division into seasons. ...
  • The dry summer of 2018; what are the consequences

    As the month of July progressed, the drought in 2018 increasingly became the topic of conversation. Newspapers told about the concerns about flora, fauna and the greater risk of forest fires. Weathermen made the link to the dry summer of 1976. A drought that occurs in the Netherlands in the current climate on average only once every 100 years. ...
  • Autumn in the Netherlands

    Summer often ends in the Netherlands in the fall, where the weather can be nice until well into September. The sunshine is getting weaker, the days are getting shorter and night frost can come. In the morning it can be foggy and mushrooms grow in the forest. The weather depends on the location of the high and low pressure areas. ...
  • Finally a white Christmas

    Every year many Dutch people hope that we will have a real white Christmas. A week before Christmas in 2009, a lot of snow falls. Everywhere you hear people suggest that we are going to have a white Christmas or that the chance of a white Christmas is now very high. The weather forecasts for Christmas are not yet completely clear ... Will it be a white Christmas or will we have bad luck again this year? ...
  • The Origin of AIDS / HIV

    When the first cases of AIDS appeared in the United States, everyone was stunned. Where did this new disease come from? Scientists came to the conclusion that it was a virus that had spread from monkeys to humans and was then mutated. New Disease In the early 1980s, a new illness emerged in the United States among gay men. ...
  • The weather during Sint Maarten through the years

    'November 11th is the day that my light is allowed to burn' is the text of a famous song, which is sung with Sint Maarten, when primary school children with decorated lanterns pass the doors. In exchange for singing a song, they get sweets or fruit. Sint Maarten is celebrated every year on November 11, except if this day falls on Sunday, then the children come to the doors on Saturday or Monday. ...
  • A development of HIV in Dutch criminal law

    The STI HIV (human immunodeficiency virus) can be treated well (despite the absence of a vaccine). Thanks to medicines (HIV inhibitors), an HIV infection can be effectively suppressed. In addition to the developments for HIV in medicine, there is also a development visible in Dutch criminal law. ...
  • Winter 2018 - 2019: Will we have a white Christmas?

    The weather is often the topic of conversation. So too the question whether we will get a white Christmas. This question is therefore an annual question. That is why in 2018 the question about the weather at Christmas will be current again. This is despite the fact that since 1900 there has only been a white Christmas eight times in the Netherlands. ...
  • Ice hair, a rare natural phenomenon

    Ice hair is a special form of ice growth. In contrast to hoarfrost where ice crystals form or with ice that is caused by supercooled rain, ice hair consists of thin strands of ice that form on dead wood of deciduous trees. The fungi that are in the wood are responsible for the production of ice hair. ...
  • The emergence of ice crystals, snow crystals and frost

    A clear sky in the early morning, white frozen meadows and a beautiful red coloring of the sun, which is rising above the horizon. It seems to be an ideal winter day. With the nose on the ground, you can see the most wonderful phenomena. On twigs and grasses. Clear crystal it seems, with beautiful shapes. ...
  • Storm in the Netherlands

    The weather forecast is often monitored via television or on the internet. We often hear warnings of storms during these news items. This is one of the normal phenomena in our climate. Storm is a strong wind and can occur throughout the year in the Netherlands. The chances are greatest during the fall and winter. ...
  • Russian bear - metaphor for cold from Siberia

    Long-lasting freezing cold coming our way from the east is also called the Russian bear. It is a metaphor for cold waves that determine the weather in central and western Europe from the north-west of Russia. When the Russian bear presents itself, you can skate in the Netherlands. ...
  • Winter in the Netherlands: how does it come about?

    Winter is usually at its coldest in the Netherlands in January and February. Compared with other regions such as Scandinavia and Eastern Europe, the winters in our country are mild. Over the years, winter has become increasingly milder, yet we still have significant outliers. The earth is tilted in the winter in such a way that there is a minimum of solar energy. ...
  • IJzel: safe on foot, by bike or by car with ice

    The winter period is often a fresh, cold and wet period. Temperatures can fall sharply in the winter season, which can result in freezing frost. IJzel is no fun at all and on the road, ice can cause life-threatening circumstances, whether for car drivers, cyclists or hikers. ...
  • Winter storm or thundersnow - storm with snow and hail

    In the summer we regularly have thunderstorms in Northwest Europe. After a hot day, it sometimes thunders in the afternoon or evening. Winter thunderstorms, thunderstorms together with snow or hail, are much rarer along the North Sea coast, but if it happens, be careful. In America and Canada, winter storms occur in some areas, for example around the Great Lakes, with some regularity. ...
  • Winter troubles: black ice, snow and (melting) ice

    In the winter there is occasional black ice. Often this is not accompanied by real problems. You have to pay attention, but there are no serious obstacles. Very occasionally it occurs that the ice formation is so severe that a weather alarm is triggered for it. In the worst case, society can be completely disrupted by this serious black ice. ...
  • At his Easter best? - Easter again

    Much has been written about the Christmas weather; the weather at Easter is actually much more fascinating for the hobbyist. This of course also because Easter alternates between March and April. Easter falls on the Sunday after the first full moon in the spring. The earliest possible Easter date is therefore 22 March and the last possible 25 April. ...