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russ_watters's latest activity
russ_watters
reacted to
Baluncore's post
in the thread
Wing Sails on modern ships
with
Like
.
But each of those boats has two leeboards, the high side is showing, while the lower leeboard is deep in the water, under the vessel...
Yesterday, 6:18 PM
russ_watters
reacted to
Arjan82's post
in the thread
Wing Sails on modern ships
with
Skeptical
.
I think you are underestimating how stable a flat bottomed ship actually is, just as an example, this is fine: These ships have no...
Yesterday, 6:17 PM
russ_watters
reacted to
Baluncore's post
in the thread
Does energy exist?
with
Like
.
Is energy really real, or just literally real?
Yesterday, 9:22 AM
russ_watters
reacted to
PeroK's post
in the thread
Does energy exist?
with
Like
.
Nothing in physics exists or everything in physics exists, depending on your definition of existence. In neither case does the theory...
Yesterday, 9:22 AM
russ_watters
reacted to
Baluncore's post
in the thread
Wing Sails on modern ships
with
Like
.
There are no big vessels using the system. There is one small demo vessel on Lake Geneva? There are many more artists impressions...
Monday, 3:24 PM
russ_watters
reacted to
Baluncore's post
in the thread
Wing Sails on modern ships
with
Like
.
Two pascals, is the ram air pressure at about 6 kph. I expect one side of the leading edge of the sail will then collapse inwards...
Monday, 3:24 PM
russ_watters
reacted to
sophiecentaur's post
in the thread
B
Calculating vacuum -- These numbers do not make sense
with
Like
.
That’s ok but there has to be a known reference pressure that isn’t AP. You have not given a diagram to explain how you do without AP...
Monday, 1:44 PM
russ_watters
reacted to
fresh_42's post
in the thread
News
University research in the Age of Protest
with
Like
.
I think that on-campus research is important and should not be restricted in any way. Every other position is in my mind a capitulation...
Sunday, 10:10 AM
russ_watters
reacted to
DaveC426913's post
in the thread
Laser to burn insect
with
Like
.
I think the characteristics of the laser are almost inconsequential. If you can manage to target an insect on the skin, you can pretty...
Sunday, 9:28 AM
russ_watters
reacted to
Vanadium 50's post
in the thread
I
Using a tuning fork vs computer tuner for violin
with
Like
.
He hasn't been here since he posted. Presumably now his violin is tuned so he will never have to tune it again. :smile:
Sunday, 9:25 AM
russ_watters
reacted to
Vanadium 50's post
in the thread
Which year did Newton first work with calculus: 1664,1665 or 1666?
with
Like
.
IBTL. Asking us to figure out when something first popped into Newton's head, and not when it was written down, seems unrealistic. After...
Friday, 2:43 PM
russ_watters
reacted to
fresh_42's post
in the thread
Which year did Newton first work with calculus: 1664,1665 or 1666?
with
Like
.
This is scientific dishonesty because you cannot know. You prefer guesswork over facts! How do you even know that what you call ideas...
Friday, 2:42 PM
russ_watters
reacted to
berkeman's post
in the thread
Which year did Newton first work with calculus: 1664,1665 or 1666?
with
Like
.
If your artist uses stylized cursive lettering, a 5 and a 6 look very similar. Just sayin'. :wink:
Friday, 2:29 PM
russ_watters
reacted to
Zybex's post
in the thread
Cargo to space launch problem
with
Like
.
SpinLaunch is just another scam project that exists only because investors and sponsors have no idea about physics. Just like Mars One...
Friday, 6:50 AM
russ_watters
replied to the thread
Cargo to space launch problem
.
That's a terrible idea. It'll go straight up and then straight down.
Thursday, 10:40 PM
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