1

New Theories / Re: Does the speed of a river flow depend on the time of day?

« on: 02/12/2018 18:31:49 »

It would depend on rain in them thar hills.

Rain falls, tributaries get flow but they all flow down to sea level no matter what at the same rate.

The only affect would be evaporation. Heat may play a very minor part in atoms for flow rate but I think that rain and gravity are the 2 main factors.

2

Science Experiments / Finally created my Perpetual Motion Machine

« on: 02/12/2018 17:51:50 »

Been a while since I posted here guys but i've worked really hard on this and finally solved it:

Put my idea on New Theories

https://www.thenakedscientists.com/forum/index.php?topic=32581.0

3

Marine Science / Re: Should you collect shellfish between September and April?

« on: 16/12/2017 15:04:15 »

Actually I heard the O/P as well not to collect when there is an R in the month. I just assumed it was a wives tale to let the shellfish grow and spawn new growth. R months are usually chillier ones anyway, making it harder to collect.

4

Physics, Astronomy & Cosmology / Could a black hole exist between Mercury and the Sun?

« on: 05/11/2017 18:34:19 »

And disprove Einstein?

I've a maths 'O Level' just curious like

5

General Science / What has the biggest effect on drying clothes?

« on: 16/10/2017 11:43:14 »

I'm sure evapouration is the reason why clothes dry on the line but what has the biggest effect in drying clothes? Is it wind, the Sun, humidity or temperature? or something else?

6

The Environment / Is the Earth a closed microsystem?

« on: 17/11/2013 12:28:55 »

Humans can survive in Space but can we really live there?

All life seems to depend on other life. Bacteria in our gut for instance digest our food and in turn keep us alive. Start removing links in the food chain and things start to go wrong.

There's a lot of talk of sending humans to Mars. This is feasible but I don't think for the above reasons we could colonise the planet or terraform it. There's just too many variables that can go wrong. Similarly on Earth we are destroying our ecosystem. We almost destroyed the Ozone without knowing but who knows the repercussions of depleted Ozone or other things we as yet don't know about? For this reason I fear for our species and the planet.

Anyone any thoughts on this subject?

Can we really move off the planet and live elsewhere in the Solar System?

7

Chemistry / Can you sing the element song?

« on: 16/11/2013 19:58:42 »

I know the first verse 

8

Chemistry / Re: How does cornflour thicken gravy?

« on: 16/11/2013 15:12:42 »

Many thanks for the response and it's probably the right answer.... but can I have that in layman's terms 

9

Chemistry / How does cornflour thicken gravy?

« on: 16/11/2013 11:43:29 »

Put some cornflour or flour in water and it turns into a thick goo but reasoning makes me think that the particles should float in suspension in water and not have any effect.

Can anyone explain to me if there is a chemical process that turns water into a sort of quicksand?

10

Physics, Astronomy & Cosmology / Re: If a bomb explodes in space, is there a shockwave?

« on: 09/12/2012 11:13:06 »

Is the quote, "In space, no-one can hear you scream", misleading?

I know sound waves can't travel but would there be a shockwave?

11

Physics, Astronomy & Cosmology / Re: Why does Mars have a sky?

« on: 09/12/2012 11:10:15 »

I would imagine daylight would be like a dusky day on Earth and I would imagine that the cameras are calibrated to be more sensitive because there is less light hitting Mars. Even though it has a smaller atmosphere that Earth, the majority of it would be at ground level where the Rover is. Any photo's would be taken through the majority of this.

I've never seen a photo taken at the zenith from the Rover so can you point me to the link of any?

I'm not sure if these are the correct answers to your questions but I'm no Mars expert. I don't however go in for any conspiracies and I've no doubts we've landed Rovers on Mars and Men on the Moon.

12

Physics, Astronomy & Cosmology / If a bomb explodes in space, is there a shockwave?

« on: 08/12/2012 13:38:57 »

I'm just watching Superman 2 and he explodes a bomb in space which releases the baddies  :0

Would it create a shockwave?

13

Physics, Astronomy & Cosmology / Re: What was the Big Bang, and where did it come from?

« on: 22/10/2012 14:14:11 »

So what's so wrong with the Steady State Theory?

Wasn't it calculated that it only required 1 particle to be created each year in a galaxy for it to work?

That would give the 2.7k heat and expansion that is observed?

It also does away for the need for a Big Bang.

14

Physics, Astronomy & Cosmology / Why are there so many meteor showers throughout the year?

« on: 20/10/2012 13:40:16 »

A meteor shower is debris from a comet? Correct?

I'm just wondering why we see so many in a year? Surely the chances of a comet passing the Earth's orbit are pretty slim but yet the debris from Comet Halley manifests itself in the form of the Orinids. Does that mean Halley has a chance of impacting us some day before it evaporates? There are at least a dozen major showers every year which means as many comets have crossed out path? Isn't this a statistical anomaly?

I'm wondering has any inter planetary spacecraft crossed the path of any cometary debris? As a comet doesn't usually follow the plane of our solar system then surely the solar system should be riddled with cometary debris - especially the inner Solar System? Does the Messenger and the Spacecraft around Venus pick up any increase in activity?

15

Geology, Palaeontology & Archaeology / Were all dinosaurs reptiles?

« on: 19/04/2012 17:36:51 »

And how do we know?

A Rhinocerous (is that how you spell it  )looks pretty similar to a Tricerotops so how do we know that the Tricerotops wasn't a mammal?

16

Physics, Astronomy & Cosmology / Inflation and Dark Energy?

« on: 19/04/2012 17:34:00 »

Are they both 2 sides of the same coin?

I hear them mentioned constantly but they never seem to be mentioned together.

What's the difference?

17

Physics, Astronomy & Cosmology / What is the limiting mag in Space and do astronauts suffer light pollution?

« on: 11/12/2011 16:04:41 »

Hi all, a keen eyed observer on Earth can see down to magnitude 6.0, some very keen eyes can see as low as 6.5 but what mag would an average astronaut see?

Also would they be affected by light pollution like a bright Earth, Moon or Sun? Could an observer see stars very close to the Sun in space? And would staring at the Sun be more dangerous?

Many thanks

18

Physics, Astronomy & Cosmology / How were neutrinos discovered?

« on: 27/10/2011 23:19:07 »

I listened to this Podcast yesterday, perhaps it may be of use to the OP and others.

http://www.bbc.co.uk/programmes/b0106tjc

Melvyn Bragg and his guests discuss the neutrino.

In 1930 the physicist Wolfgang Pauli proposed the existence of an as-yet undiscovered subatomic particle. He also bet his colleagues a case of champagne that it would never be detected. He lost his bet when in 1956 the particle, now known as the neutrino, was first observed in an American nuclear reactor.

Neutrinos are some of the most mysterious particles in the Universe. The Sun produces trillions of them every second, and they constantly bombard the Earth and everything on it. Neutrinos can pass through solid rock, and even stars, at almost the speed of light without being impeded, and are almost impossible to detect. Today, experiments involving neutrinos are providing insights into the nature of matter, the contents of the Universe and the processes deep inside stars.

With:

Frank Close
Professor of Physics at Exeter College at the University of Oxford

Susan Cartwright
Senior Lecturer in Particle Physics and Astrophysics at the University of Sheffield

David Wark
Professor of Particle Physics at Imperial College, London, and the Rutherford Appleton Laboratory.

Producer: Thomas Morris.

19

Physics, Astronomy & Cosmology / Could you watch the following and then answer something for me?

« on: 27/10/2011 23:12:40 »

Many thanks, I thought I knew the answer (Newton's 3rd law) before I asked the question but 2 very concise answers put me wrong. While I don't understand the maths I can understand the logic.

20

Physics, Astronomy & Cosmology / Could you watch the following and then answer something for me?

« on: 27/10/2011 20:41:44 »

Seen this on the Nasa website, it's the space station boosting its orbit and the astronauts going backwards due to Newton's third law.

http://www.nasa.gov/multimedia/videogallery/index.html?media_id=117824321

Now could someone tell me, when I'm on a plane and I feel the acceleration as it takes off. If I throw something up, why doesn't it shoot to the back of the plane?