Astronomy Astrophysics

Download Bad astronomy: misconceptions and misuses revealed, from by Philip C. Plait PDF

Posted On April 11, 2017 at 11:45 pm by / Comments Off on Download Bad astronomy: misconceptions and misuses revealed, from by Philip C. Plait PDF

By Philip C. Plait

Encouraged by way of his well known site,, this primary booklet by way of Plait (astronomy, Sonoma country Univ.) debunks well known myths and misconceptions in relation to astronomy and promotes technological know-how as a method of explaining our mysterious heavens. The paintings describes 24 universal astronomical fallacies, together with the ideals that the Coriolis influence determines the course that water drains in a tub and that planetary alignments may cause catastrophe on the earth. the writer sharply and convincingly dismisses astrology, creationism, and alien ship sightings and explains the rules at the back of simple basic techniques (the mammoth Bang, why the sky is blue, etc.). even though a few may well locate him strident, Plait succeeds brilliantly simply because his transparent and comprehensible factors are convincing and sincere. this primary quantity in Wileys «Bad technology» sequence is usually recommended for all libraries, in particular astronomy and folklore collections.

Show description

Read Online or Download Bad astronomy: misconceptions and misuses revealed, from astrology to the moon landing 'hoax' PDF

Similar astronomy & astrophysics books

Destiny or chance revisited : planets and their place in the cosmos

This interesting travel of our Universe explores our present wisdom of exoplanets and the quest for one more Earth-like planet. starting with the elemental innovations of planet formation and the composition of the Universe, Stuart Ross Taylor summarises our wisdom of exoplanets, how they examine with our planets and why a few stars have higher liveable zones.

Dune Worlds: How Windblown Sand Shapes Planetary Landscapes

This booklet describes how sand dunes paintings, why they're the best way they're in numerous settings, and the way they're being studied. specific awareness is paid to their formation and visual appeal in other places within the sun method. New advancements in wisdom approximately dunes make for a fascinating tale – just like the dunes themselves, dune technological know-how is dynamic – and the appearance of Aeolian geomorphology guarantees that this is often an enticing quantity.

Handbook of Archaeoastronomy and Ethnoastronomy

How human groups interpret what they understand within the sky is essential in pleasant humankind’s most simple have to understand the universe it inhabits, either from a contemporary clinical point of view and from numerous different cultural standpoints, extending correct again to early prehistory. Archaeoastronomy, that's curious about cultural perceptions and understandings of astronomical phenomena, is a wealthy cross-disciplinary box.

Astronomical Discoveries You Can Make, Too!: Replicating the Work of the Great Observers

It's also possible to stick to within the steps of the nice astronomers comparable to Hipparchus, Galileo, Kepler and Hubble, who all contributed rather a lot to our sleek realizing of the cosmos. This e-book supplies the coed oramateur astronomer the subsequent instruments to copy a few of these seminal observations from their very own homes:With your personal eyes: Use your personal observations and measurements to find and ensure the phenomena of the seasons, the analemma and the equation of time, the good judgment in the back of celestial coordinates, or even the precession of the equinoxes.

Additional resources for Bad astronomy: misconceptions and misuses revealed, from astrology to the moon landing 'hoax'

Example text

That’s why the sky looks blue. Those blue photons are converging down on you from all directions so that it looks to you like the sky itself is giving off that blue light. The yellow, green, orange, and red photons from the Sun get scattered much less than do blue ones, and so they come straight at you from the Sun without having suffered all those scatterings. At this point, you might reasonably ask why the sky isn’t violet. After all, violet light is bent even more, and actually does scat- BLUE SKIES SMILING AT ME 43 ter more, than blue light.

Surprise! So why doesn’t the Sun look green? Because it isn’t producing only green but a whole spectrum BLUE SKIES SMILING AT ME 47 of colors. It just produces more green than any other color. When they are all combined, our eye still perceives the light as white. Or yellow. Take your pick. Okay, I lied a minute ago; I still have one more question. If the sky isn’t blue because it reflects the color of the oceans, why are the oceans blue? Do they reflect the sky’s color? No. Of course, they do reflect it a little; they look more steely on overcast days and bluer on sunny days.

This pattern may be tough to remember, so it’s usually taught to students using the acronym ROY G BIV, like that’s a common name or something. Still, that’s how I remember it, so it must work. Those colors are coming from the Sun all at the same time, but a funny thing happens on the way to the ground. Molecules of BLUE SKIES SMILING AT ME 41 nitrogen and oxygen (N2 and O2) in the air can intercept that light. Almost like little billiard balls, photons—the fancy name for particles of light—bounce off these molecules and head off in a different direction every time they hit one.

Download PDF sample

Rated 4.88 of 5 – based on 26 votes