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About timharvey027

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  1. Thanks John, For very big safe, substitute if for incerdibly thick streel box which would not expand or burst. The point of my question is, if water atoms are confined so they CANNOT expand surely they would not freeze, just slow down even at minus 200...what do you think?
  2. If I have a very big waterproof safe and I filled it with water and locked it, then froze it to say minus 200 would the water freeze ? Do you need air to freeze water to ice?
  3. Thanks for all your really informative answers to does light accelerate I have another more interesting question. For this consider the following crude analogy: Consider a perfectly spherical pin cushion about the size of a golf ball, it filled full of pins tightly packed together so much so that you can no longer see the pin cushion only the pins. Imagine this perfectly spherical pin cushion is suspended in the centre of a balloon , which itself is suspended inside a spherical hot air balloon, which is suspended is a sphere the size of the moon, which is suspended inside a sphere the size or earth , next the size of sun. Now extrapolate the pin lines outward until they touch the inner surface of each of the aforementioned. Because the do not expand as cone shaped but simply straight lines you end up with a very spikey pin cushion and as the pins get further away from the cushion the distance between the pins expands. In between the pins there is space with no pins. Now consider a light source about the size of the pin cushion, we can calculate the amount of light emitted right (yes). So if each of the photons/stream of photons/light waves leaves the perfect spherical surface as they travel outward they will become more distant from each other. Ahaa I hear you cry but you must take into account the fact the light will leave the sphere at a multitude of angles. I have considered this and still think you would need an infinite number of photons (streams, waves) leaving at an infinite number of angles if you were to end up with a wall of light a trillion miles away . Where am I going wrong?? Thanks
  4. If I took a magnet into deep space say outside our solar system where would the north seeking pole point?? 2. If I chopped it in half (in space) would I still get two magnets? 3. Thought experiment: if I had a very microscopic bar made of just two iron atoms, on earth, and I magnetised it whilst it was lying west-east what would make one atoms north seeking? If that makes sense??
  5. Prof Merrifield and Moriaty say it does, confused now.
  6. Consider a photon emitted by a photon emitter, it travels through a vacuum and then into a block of glass, it travels slower through this than the vacuum right? It leaves the block of glass and continues through the vacuum until it hits its target. Q1. When it leaves the block of light where does it get the energy to accelerate? Q2. Where does it accelerate? If it does not how can it go from one speed to another without doing so? Q3. What is it's speed when it is halfway out of the block of glass? Q4. Consider a beam of light as a wave instead of a photon, same questions.
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