So do you know the answer - 50 tons of Canaries

[Bruce Tuncks]

I'm not sure if you are right there OME. But this whole business makes my head spin on account of how I'm not really smart enough to figure it all out.

Once I tried to learn how to derive E=MCsquared but I failed. So I though about getting a brain transplant. There sure are some smarter ones out there.

[Flightrite]

I'm not sure if you are right there OME. But this whole business makes my head spin on account of how I'm not really smart enough to figure it all out.

Once I tried to learn how to derive E=MCsquared but I failed. So I though about getting a brain transplant. There sure are some smarter ones out there.

 

Just to ease yr pain knowing such stuff shouldn't make any difference to your life, unless of course the canaries got into the cockpit distracting the flight crew and the plane crashed into your house!??

[danny_galaga]

Two simple ways to explain it in my mind.

 

1) lift equals weight. The downforce of each little criiter equals their weight so nothing changes.

 

2) view the canaries as molecules instead. If molecules move around more rapidly in a closed container, the container will still behave in the same way. Of course higher molecular movement equals higher pressure but the container still behaves the same (unless of course the pressure is so high the container explodes ? )

[old man emu]

I'm not sure if you are right there OME.

 

The question has intrigued me all morning. I'm going to dust off the physics books and if I can get an understanding of it, I'll create a new thread

 

OME

[old man emu]

If both spaceships are travelling at the speed of light, then their electro-magnetic images would be travelling at the speed of light also.

 

Sorry for making this sentence obscure. Hope this explains it better.

 

We see things with our eyes by the interaction of light waves on certain cells in our eyes. Those cells only react to certain electromagnetic wavelengths. That's due to our evolutionary development. Other organisms cant react to either a wider or narrower range of wavelengths. .

 

 

Man, being an amazingly creative animal, has managed to make tools that enable S/Him to detect other electromagnetic wavelengths. Chief amongst those wavelengths we use to detect things are radar waves. So we see by the use of 'visible light' waves and radar waves. Both of these travel at the same speed, 299,792 kilometers per second.

 

If our spaceships are travelling (theoretically) at the Speed of Light, then the electromagnetic light or radar waves are travelling at the same speed, and, relative to the the spaceship they are from, cannot move ahead to the spaceship. Therefore, they cannot reach the observer in the other spaceship any sooner than the emitting spaceship. Therefore, the each spaceship would be invisible to the other.

[Yenn]

The two spaceships are travelling at twice the speed of light relative to each otherI want to travel at greater than the speed of light so that I can turn round and see myself coming'

The reason that the Concorde was not used as a military plane was that it travelled faster than a bullet, so that if it shot a gun it would shoot itself down.

[octave]

interesting article from New Scientist

If birds in a truck fly, does the truck get lighter?

[M61A1]

The reason that the Concorde was not used as a military plane was that it travelled faster than a bullet, so that if it shot a gun it would shoot itself down

There are quite a few military jets that go faster than bullets.

[KRviator]

There are quite a few military jets that go faster than bullets.

And look what happened!

[pmccarthy]

To see yourself coming you just need a mirror on the bedroom ceiling.

[octave]

To see yourself coming you just need a mirror on the bedroom ceiling.

 

That is way too much information about the Mcarthy household:wink:

[Yenn]

If birds in a truck fly, their weight will not be added to the trucks weight if there was a free flow of air from inside to outside of the truck. You don't feel the weight of a ;elican if it flies directly over you, although you will feel the wind disturbance. Nor do you feel the weight of a plane if you are under it on the threshold. Just imagine being under a 747.

[facthunter]

If it's in ground effect you will notice it passing overhead and most likely the downwash and wingtip vortices if it's low enough. Nev

[kgwilson]

My head began to hurt at post #1. Now it has degraded into a gelatinous mass.

[facthunter]

You see that effect when a plane fly's low over calm water, particularly a highly wingloaded one. Nev

[hihosland]

closing speed is at speed of light if one spacecraft is at less than light speed.

 

however since both objects are at the speed of light they are both of infinite mass and are requiring infinite energy to propel them

therefore the situation cannot occur.

 

they cannot approach each other therefore the closing speed is zero.

 

unless, of course, they are on conveyor belts aligned to each other.

[danny_galaga]

If a train is heading west at 65 kmh and three dung beetles are eaten by five cimpanzees, does anyone hear the tree fall?

[IBob]

I don't know about canaries......but if they're budgies and they came via Melbourne, they may be required to stay up indefinitely.....(

[spacesailor]

CAN I haveago.

6.6 Kgms per square meter of air, On takeoff, in your jumbo, (that had budgies in it.) IF it springs a leek and looses all that air, (at max height ) will the plane be lighter.

spacesailor

[hihosland]

If a train is heading west at 65 kmh and three dung beetles are eaten by five cimpanzees, does anyone hear the tree fall?

only the train driver's wife

[Flightrite]

CAN I haveago.

6.6 Kgms per square meter of air, On takeoff, in your jumbo, (that had budgies in it.) IF it springs a leek and looses all that air, (at max height ) will the plane be lighter.

spacesailor

There will be lots of dead buggies that's for sure!?

[Jerry_Atrick]

only the train driver's wife

 

And only when she is having a cuppa tea.. with two sugars...

[Butch]

CAN I haveago.

6.6 Kgms per square meter of air, On takeoff, in your jumbo, (that had budgies in it.) IF it springs a leek and looses all that air, (at max height ) will the plane be lighter.

spacesailor

I would say yes the cargo on the plane is lighter, the aircraft is still the same weight. Any gas or material that is compressed in a set area will always be heavier for that area than in a neutral state.

[pmccarthy]

I have actually seen about a thousand budgies flying in a flock. A sight you would never forget.

[KRviator]

OOps, wrong 'fred. My bad.