Science
Exploring "Why" questions about Science
484 articles
why does it take so long after your flight has pulled into the gate to open the doors?
The pilot needs to shut down engine and ground crew need to chock the plane. The cabin crew then need to unbuckle once they're told the plane is in position and make their way to the exit door. The do
Why is it when you put room temperature items in a refridgerator, does it seem to make the other items inside less cold over time until everything has cooled down tothe same temperature? Or is this…
Technically, things can't give or take "cold" from objects, they only give or take heat. Cold is simply the word to describe when something is colder than another thing (usually our hand). Cold object
Why is it that we can see dim light in a dark room better in our peripheral vision than when we look straight at it?
You have different things in your eyes called rods and cones. Rods are better at seeing in low light, and are generally around the outer part of your eye. Cones can see color, and are grouped right in
why can’t light stay still?
Light *always* has at least *some* energy. That's part of what it is. Light can't *not* have energy.
Why does shaking a liquid mix everything together and not separate it?
It's called agitation if you were to spin it with screens finer and finer toward the outside you would then separate it,but thats only part of it the lighter material will go to the top so you could a
Why are 4×4 vehicles (Such as the Jeep Wrangler) Limited in speed (80kph as per the owner manual) in 4WD mode, whereas a full time All-Wheel Drive vehicle doesn’t have any such limit (within the li…
4WD locks the front and rear axles together mechanically. It's either on or off. AWD uses an differential to change how much each axle is used.
Why do our eyes adjust to bright light quickly but take a while to adjust to the dark?
Your cones (the vision receptors designed for bright light and color sensitivity) can fully adjust in only a few minutes. Your rods (the dark-adapted receptors) take much longer, 30+ minutes for just
Why do gas prices change daily, but nearly all other consumer products have a fixed price?
Consumer products don't have a fixed price. Rather, they don't have a fixed cost, but retailers usually mark them up high enough that the profit buffer is still there no matter how much the cost fluct
Why does string theory matter?
It is a theoretical framework that potentially allows for a 'Theory of everything' by incorporating gravity, and as such potentially approaches a more fundamental description of existence. And of cour
Why don’t videos at 1080p look anywhere near as clear as a photograph at 1080p?
The first thing is that virtually all (amateur) video is compressed, before it gets anywhere near YouTube. You could use a lossless codec if your camera has that ability (on some cameras you can set t