On his science book blog John Ptak posted an entry entitled, "Dreaming of the 10-Ton Eiffel Tower Bullet, 1891," about a proposed fun ride in which people would sit inside a giant bullet and freefall from the top of the Eiffel Tower into a pool of water.
Physics of impact aside for the moment, M.Carron’s bullet capsule would be released from the top of the interior of the Tower, about 1000 feet high, and released to fall into an excavated pool 150’ across and 200’ deep. The idea was that in addition to the springs inside the capsule, the water would act as a “shock absorber”, and so “the shock felt by the occupants on landing will be in no way unpleasant”.
Dreaming of the 10-Ton Eiffel Tower Bullet, 1891
[Okay, so the thing would hit at 178mph or so, and, assuming that the whole thing didn’t get completely crushed on impact, I’m not so sure that 200’ of depth is very much wiggle room for the thing to come to a halt (if it didn’t deform). Also it would have to not have any wind deflection so as to not veer off its perfect entry into the water. And so on. Calculating the force of impact is difficult without knowing how far down the bullet would go, but hitting the water at 80 m/s and stopping at 30 meters would yield something like 28,600,000 KE and 1,274,000 N. There are lots of problems…]
The thing is, though, the thing that made this so appealing, is that for the 20-francs that get a person a seat in the bullet, that they would each get to go twice as fast as any human had ever traveled before ( 65 miles per hour was about the speed of the fastest train constructed).
Where are our petabyte drives? Brian Hayes takes us through the reasons storage is “stuck” in the low terabytes. The tl;dr is that we got such exceptional capacity growth in the late 90s and early 00s we don’t need much more right now, so the focus since then has been on SSDs, networking, interfaces, etc, […]
Amélie Lamont, a former staffer at website-hosting startup Squarespace, writes that she often found herself disregarded and disrespected by her colleagues. One comment in particular, though, set her reeling — and came to exemplify her experiences there.
In this episode of the Flash Forward podcast we travel to a future where humans have decided to eradicate the most dangerous animal on the planet: mosquitos. How would we do it? Is it even possible? And what are the consequences? Flash Forward: RSS | iTunes | Twitter | Facebook | Web | Patreon We […]
Folks used to rely on alarms to protect their home – and before that, the family dog. Now, anyone looking to guard their homes can choose from some high-tech options, including the Amaryllo iCamPRO FHD Home Security Camera (now just $219 in the Boing Boing Store).In fact, this 2015 CES “Best of Innovation” award-winner boasts so many features, it’s […]
If you want a quality vaping experience, it’s usually going to cost you. Vaporizers that deliver a fast, controlled burn will set you back up to $300, which is why the FEZ Vaporizer (now just $99) is an absolute steal.The FEZ dry herb pen does everything that more expensive models handle at a reduced price. It heats up […]
Taking pictures can be challenging. There are a million factors that can influence each shot you take – and unless you’re a trained photographer, you often just focus, click…and cross your fingers.Of course, you can take some of the ambiguity out of your picture-taking with this Hollywood Art Institute Photography Course & Certification package, now […]