Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | ... | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 
Lock him up!
10946 posts

Uber Geek

Lifetime subscriber

  # 1659658 28-Oct-2016 12:04
Send private message

tdgeek:

 

 

 

 

 

In orbit is different. We are falling to the earth.  We have mass and weight due to Earths gravity. However, we dont deploy a means to add a gravity effect. Why is that? When we are not orbiting, perhaps going to Mars, we wont do that either. 

 

 

Not sure I understand your intention here. My original question was precisely that, why don't we deploy a means to add a gravity effect when there is a known technique (centrifugal force) that works for this. Is it because it is still too difficult to engineer such a thing in space?

 

Since posting my question I have read more about this. The use of rotating spacecraft to create simulated gravity is in fact being investigated, and it has been employed on a small scale in tests with mice, but apparently it is still too difficult and maybe not sufficiently cost-effective to be worth trying to scale up at this stage of development. Certainly it isn't being ruled out.

 

 





I don't think there is ever a bad time to talk about how absurd war is, how old men make decisions and young people die. - George Clooney
 


3018 posts

Uber Geek

Lifetime subscriber

  # 1659709 28-Oct-2016 12:47
One person supports this post
Send private message

tdgeek:

 

Rikkitic:

 

I honestly don't understand what you are going on about. Continuous centrifugal force has the same effect on the body as gravity. Fine, call it something else but the effect is the same and for this purpose that is what matters.

 

 

I think he means if you rotate something to cause centrifugal force, its hard to use. But, in space, you have mass, but there is weightlessness, so centrifugal has no force. There is no weight to create a force. Keep it simple. Use magnets to create weight. Lose the magnets to allow you to use the 360 degree space. In the ISS, there are four walls. Or four ceilings, or four floors. I feel magnets are the way to go. Easy and cheap. 

 

 

You don't seem to understand the physics. Weight is irrelevant, and, what's more, weight does not create a force. Weight is the product of gravity and mass.

 

Force = MASS * acceleration

 

If you take a mass and rotate it, you are accelerating it towards the axis of rotation. i.e. you are applying a (centripetal) force towards the axis of rotation. 

 

Magnets do not create weight... they create force. What's more the force gets stronger as the magnet approaches the metal. So, once your magnet is attached to the floor, you won't be able to release it, so won't be able move around. You could conceivably use electromagnets, but then you need to power them somehow.

 

 


 
 
 
 


8895 posts

Uber Geek


  # 1659817 28-Oct-2016 14:09
Send private message

Sobering:

 


3018 posts

Uber Geek

Lifetime subscriber

  # 1659839 28-Oct-2016 14:37
Send private message

Interesting. OTOH, all the American missions are post-1975, whereas all but one of the Russian ones are before that. (Let's not mention the Europeans ;) )

 

Sticking with the sporting analogy... the men's pole vault record was 5.65m in 1975, and is now 6.16m.

 

At the Montreal Olympics (1976), the 3 medallists all cleared 5.50m in the final. At Rio, you had to clear 5.60m just to qualify for the final, and the winner cleared 6.03m, silver 5.98m, bronze 5.85m

 

 


1 | ... | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 
View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Samsung Galaxy Fold now available in New Zealand
Posted 6-Dec-2019 00:01


NZ company oDocs awarded US$ 100,000 Dubai World Expo grant
Posted 5-Dec-2019 16:00


New Zealand Rugby Selects AWS-Powered Analytics for Deeper Game Insights
Posted 5-Dec-2019 11:33


IMAGR and Farro bring checkout-less supermarket shopping to New Zealand
Posted 5-Dec-2019 09:07


Wellington Airport becomes first 5G connected airport in the country
Posted 3-Dec-2019 08:42


MetService secures Al Jazeera as a new weather client
Posted 28-Nov-2019 09:40


NZ a top 10 connected nation with stage one of ultra-fast broadband roll-out completed
Posted 24-Nov-2019 14:15


Microsoft Translator understands te reo Māori
Posted 22-Nov-2019 08:46


Chorus to launch Hyperfibre service
Posted 18-Nov-2019 15:00


Microsoft launches first Experience Center worldwide for Asia Pacific in Singapore
Posted 13-Nov-2019 13:08


Disney+ comes to LG Smart TVs
Posted 13-Nov-2019 12:55


Spark launches new wireless broadband "Unplan Metro"
Posted 11-Nov-2019 08:19


Malwarebytes overhauls flagship product with new UI, faster engine and lighter footprint
Posted 6-Nov-2019 11:48


CarbonClick launches into Digital Marketplaces
Posted 6-Nov-2019 11:42


Kordia offers Microsoft Azure Peering Service
Posted 6-Nov-2019 11:41



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.