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Jeremy Lichtman's profile was updated 5 years, 6 months ago
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Jeremy Lichtman replied to the topic Harold "Sonny" White and NASA's warp drive project in the Conversation Big Ideas 8 years, 7 months ago
Just noticed this thread via the newsletter.
Assuming that the warp interferometer comes up with a positive result, there’s then going to be a trick engineering problem of how to produce a negative energy field around a vehicle, with the right manifold shape.
I’m assuming we’re going to need to do with with metamaterials (i.e. simulate negative…[Read more]
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Jeremy Lichtman replied to the topic Who Does The Work in the Conversation The Moonshot Ecosystem 8 years, 10 months ago
Not so sure I agree.
In a certain sense, things like space travel (at least to LEO) have become almost common-place.
But then once in a while you get somebody like Chris Hadfield who just makes it all spellbinding.
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Jeremy Lichtman replied to the topic Tornado Safe House in the Conversation Big Ideas 9 years ago
One of the reasons why tornadoes in some specific parts of “Tornado Alley” in the US are so devastating is that the ground is hard (i.e. there’s only a thin layer of soil above the bedrock) and it is an expensive process to dig deep enough to put in basements.
Using stronger building materials would help. Concrete and steel are more resistant to…[Read more]
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Jeremy Lichtman replied to the topic The Tall PowerTower in the Conversation Tall Tower 9 years ago
There’s a lot of press in the past few weeks about using Roman-style concrete (made from volcanic ash and limestone) instead of Portland cement.
It undergoes an exothermic reaction which basically turns it into rock.
It is apparently much stronger and more durable than Portland cement, and only produces a fraction of the CO2.
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Jeremy Lichtman replied to the topic 3D printing your diet in the Conversation But what will we eat? 9 years ago
Should probably be used in combination with fresh fruits/vegetables, in case they miss something that turns out to be important.
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Jeremy Lichtman started the topic Worth comparisons? in the Conversation Tall Tower 9 years ago
Is it worth doing detailed comparisons with existing ultra-tall buildings to figure out the challenges? I know some of this stuff is probably in older posts; I skimmed most of them.
i.e:
1. Economics – Burj cost order of magnitude $1 billion USD, but that cost would be much higher anywhere that cheap labor isn’t available. My understanding…[Read more]
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Jeremy Lichtman replied to the topic Practical warp drive in the Conversation Big Ideas 9 years ago
Right. Even space folding would be helpful though – imagine what it would do for increasing the amount we can lift up the gravity well.
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Jeremy Lichtman replied to the topic Progress updates on site development in the Conversation Getting Started – New User Forum 9 years, 1 month ago
Not sure if this is intentional, but comments on posts seem to be closing after a very short period of time (looks like roughly a day). Its an easy config option in WordPress if you wish to change it.
I also […]
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Jeremy Lichtman started the topic Comment close time in the Conversation Getting Started – New User Forum 9 years, 1 month ago
Not sure if this is intentional, but the time for comments to be closed on a post is very short.
It is an easy configuration option in WordPress if you wish to change it.
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Jeremy Lichtman joined the group
But what will we eat? 9 years, 1 month ago -
Jeremy Lichtman started the topic Practical warp drive in the Conversation Big Ideas 9 years, 1 month ago
Lots of assumptions here.
There’s a team at NASA playing around with plasma and interferometers, to see if Alcubierre-style warps can be created in the lab.
Assuming that they succeed in some form, there’s […]
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Jeremy Lichtman joined the group
Getting Started – New User Forum 9 years, 1 month ago -
Jeremy Lichtman replied to the topic Who Does The Work in the Conversation The Moonshot Ecosystem 9 years, 1 month ago
Where NASA really excels is in laying the groundwork for commercial space to follow.
If they focus on key technologies and infrastructure that can later be used for, say, space resource extraction, that will be […]
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Jeremy Lichtman replied to the topic The "Extrovert Ideal" as drag on progress in the Conversation The Moonshot Ecosystem 9 years, 1 month ago
Somehow in the tug of war between introverts and extroverts, us ambiverts get left out. 🙂
I did enjoy that book though.
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Jeremy Lichtman became a registered member 9 years, 1 month ago
