Mayflow

Probably light from the headlights and stuff it reflects from. Remember to look in the rear view mirror though. Drive safe.

It doesn't seem to be a very good test. Do all the pails weigh the same, and also what is the weight of the various pails when empty? Also how can 5 be evenly divided by 2?

1 Johnny 2 meat 3 Mt Everest 4 none 5 incorrectly but that is not right since incorrectly is sometimes not spelled correctly. 6 Souther hemisphere 7 You need to use some sort of camera 8 second place 9 neither 10 one

This baffles me as well as everything includes every frequency and every wavelength. We can see into the past by powerful telescopes on Earth as well as in space, and since light travels at finite speeds, what we see was light emitted in the past. I don't know of anything that sees the future in physics, although sometimes dreams may be precognitive. Consider the following: Distances and Sizes One way to measure distances is if you know the size of an object. If you can then measure its apparent angular size, you can work out the distance: Sorry, only the first formula copied correctly. If anyone wants any of the correct other formulas, I can put them into text. Please do not ask for them all at once, because the time and tediousness involved. Given the geometry above, and if D≫r, (almost always the case in astronomy), then r=θD as long as θ is measured in radians (a radian is 180π degrees). Angles in astrophysics are often so small that even a degree is too large a unit to be convenient. We typically use arcminutes (one arcminute is 1/60 of a degree) and arcseconds (one arcsecond = 1/60 of an arcminute = 1/3600 of a degree). Fluxes and luminosities Luminosity L is the total amount of power put out by some object, and is measured in Watts. Flux f is the power we receive at our telescope, per unit collecting area, and is measured in Watts per square metre. They are related by the equation: f=L4πD2 where D is the distance to the emitting object. Spectra and the Doppler Effect A spectrum is a graph of flux per unit wavelength plotted against wavelength. It will often show emission or absorption lines due to particular elements. If an object is moving towards or away from you, these spectral lines will be moved in wavelength away from their normal wavelength λo. If you observe a line at wavelength λ, you can define a redshift z as: z=λ−λ0λ0 If this shift is due to the doppler effect, and the velocity v<<c (velocity much less than the speed of light - nearly always true), then: z=vc To measure a redshift, you will need to know what lines to expect, and what their wavelengths are in the laboratory. The following graph shows you some of the typical lines you would see in a star or galaxy. Note that not all stars will show all these lines, and there are a variety of other lines that in certain stars can be strong. The C-H line is due to vibrations in the chemical bond linking carbon to hydrogen in molecules. Hubble Law Assuming that the brightest star in every galaxy had about the same luminosity (not a good assumption), Edwin Hubble calculated their relative distances. He found that the distances correlated with redshift. Everything was moving away from us and the speed correlated with how far things were from us. The standard explanation is that space itself is expanding. Objects are not moving - they are just being carried apart by the expansion of space. This means that unless more matter is created, the density of the universe must continuously go down (same amount of matter spread over more space). The alternative is that more matter is appearing out of nowhere - this is called the “steady state theory”. The “Steady State Theory” predicts that the universe should always look the same. We actually observe, however, that the universe was different in the past (we can see the past by looking a distant objects). Quasars were more common and the microwave background emission comes from a time when space was opaque.

Have any of you looked into this? It looks very positive for the future! Much much safer than fission and more powerful too, I think. https://www.iter.org BTW, hi all, I just joined and this is my first post.