Then the jar breaks…
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- 350 Comments
huquad@lemmy.mlto
Science@lemmy.ml•A Fundamental Principle of Aeronautical Engineering Has Been OverturnedEnglish
4·14 days agoDrag is caused by two forces: pressure differential and skin friction. Most bluff bodies are dominated by pressure drag due to flow separation, e.g. regular cars. Flow separation is disadvantageous because it creates a low pressure region in the back which doesn’t counteract the high pressure region at the front. Turbulence delays flow separation, thereby reducing drag. Note, the transition from laminar to turbulent flow creates a sudden drop in drag known as the “drag crisis” which golf balls take advantage of via dimples to travel farther. However, turbulent flow also causes greater skin friction, so it can be a balancing act. Some surfaces, such as airplane wings, use “trippers” to force turbulence at a certain point downwind to get the best of both worlds, i.e. laminar flow at the front to minimize skin friction and turbulent flow at the tail to delay separation.
huquad@lemmy.mlto
Technology@lemmy.world•KDE Plasma 6.7 Beta Introduces Plasma Bigscreen Mode for HTPCsEnglish
2·21 days agoI was thinking of using it to replace my shields, but reflashing would be even better!
huquad@lemmy.mlto
Mildly Infuriating@lemmy.world•Washington man arrested for allegedly throwing rock at seal in MauiEnglish
1·23 days agoI read sea at first and was very confused. Fuck this guy
huquad@lemmy.mlto
Technology@lemmy.world•KDE Plasma 6.7 Beta Introduces Plasma Bigscreen Mode for HTPCsEnglish
8·23 days agoOh my god it’s happening. Everyone stay calm. Stay fucking calm!
huquad@lemmy.mlto
Asklemmy@lemmy.ml•What is the highest Mileage/kilometer car you own/owned?English
31·28 days agoJust under 200k when the engine block failed. Would have cost more to fix than it was worth sadly
Where are my balls summer?
huquad@lemmy.mlto
World News@lemmy.world•Putin says he thinks Ukraine war 'coming to an end'English
33·29 days agoWow, lasted exactly as long as he said! \s
Thats no girl, that’s Rengoku!
Ever built a Lego set before? Well it’s nothing like that
I should probably warn you, I’m a dog
This is when freeza combines with cooler, so Freezler
I make small fortunes. Its really quite easy. You see, I start with a large fortune…
Im gonna deck you in the snoz
May your blade chip and shatter
huquad@lemmy.mlto
Technology@lemmy.ml•China develops iron battery 80 times cheaper than lithium that can last 16 years. It provides a budget-friendly, high-endurance answer for the world’s massive energy storage needs.English
353·1 month agoRevolutionary new battery idea that will overtake lithium ion huh? Throw it on the pile
Hurts me everytime
North korea is a great country, and anyone who thinks differently belongs in the gulag






And then the bottle breaks