Posts tagged ‘electromagnetism’

April 26th, 2013

So, How Did Einstein Come Up With That Famous Equation?

by Max Andrews

In 1865 James Clerk Maxwell had unified electricity and magnetism by developing his equations of electromagnetism. It was soon realized that these equations supported wave-like solutions in a region free of electrical charges or currents, otherwise known as vacuums.  Later experiments identified light as having electromagnetic properties and Maxwell’s equations predicted that light waves should propagate at a finite speed c (about 300,000 km/s).  With his Newtonian ideas of absolute space and time firmly entrenched, most physicists thought that this speed was correct only in one special frame, absolute rest, and it was thought that electromagnetic waves were supported by an unseen medium called the ether, which is at rest in this frame.

June 26th, 2012

The New Creation–What’s Next?

by Max Andrews

We cannot imagine what is going to come next.  [God] has set eternity in the hearts of men; yet they cannot fathom what God has done from the beginning to end (Ecc. 3.11).  No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him (1 Cor. 2.9).  Stretch your mind and strain your eyes to build a sustaining hope.

HOPE is the theme to the new creation.  The creation waits with eager (αποδεχομαι) longing (Rom. 8.19). αποδεχομαι [apodexomai] refers to an anxious, yet careful and patient waiting–a reservation of knowing something is coming but continuing in patience.  Hope that creation will be set free from corruption to bring glory to the children of God (Rom. 8.20-21).  We wait eagerly for the redemption of our bodies, we groan inwardly for the hope that we were saved by (Rom. 8.23-24).  The new creation is unique–hope that is seen is not hope (Rom. 8.24-25).

So, where is heaven and hell? Heaven and hell are physical and not just spiritual.  There is a resurrection of believers (1 Cor. 15) and a resurrection of unbelievers (Dan. 12.2; Rev. 20).  Heaven and hell continue to exist after this creation.  The Bible clarifies that heaven and hell continue after the moment God commands the cosmos to be “rolled up like a scroll” (Is. 34.4), to “disappear with a roar” (2 Pt. 3.10), and to “melt in the heat” (2 Pt. 3.12).  This of it this way: suppose I have a paper with the image of Dante’s universe on it.  It’s two dimensional (for the analogy to work I need to remove a dimension). If I crumble up the piece of paper the external dimensions where I am do not crumble up too.  I can crumble the paper with those dimensions and still not be affected by it.

May 15th, 2012

How Einstein got to E=mc^2

by Max Andrews

In 1865 James Clerk Maxwell had unified electricity and magnetism by developing his equations of electromagnetism. It was soon realized that these equations supported wave-like solutions in a region free of electrical charges or currents, otherwise known as vacuums.  Later experiments identified light as having electromagnetic properties and Maxwell’s equations predicted that light waves should propagate at a finite speed c (about 300,000 km/s).  With his Newtonian ideas of absolute space and time firmly entrenched, most physicists thought that this speed was correct only in one special frame, absolute rest, and it was thought that electromagnetic waves were supported by an unseen medium called the ether, which is at rest in this frame.

Let an object in a rest frame simultaneously emit two light waves with the same energy E/2 in opposite directions (now having equal but opposite momenta), the object remains at rest, but its energy decreases by E.  By the Doppler effect, in another frame, which is moving at the velocity v in one of those directions, the object will appear to lose energy equal to