Download Bubble Gum and Hula Hoops: The Origins of Objects in Our by Harry Oliver PDF

By Harry Oliver

The attention-grabbing and humorous origins of daily objects-bliss for historical past hounds, language fans and minutiae buffs.

during this pleasant quantity, Harry Oliver unearths the main strange and unforeseen tales at the back of the family must haves, toys, universal gadgets, technological advances, and daily goods all of us take without any consideration. Who hasn't puzzled:

?Whether Thomas Crapper rather invented the bathroom

?What twist of fate ended in the discovery of the microwave

?Why it took approximately 20 years for somebody to ultimately choose to slice bread

?How laziness ended in the discovery of the dishwasher

?Which discovery made the milkshake attainable

?Which king's fancy for his mistress encouraged the 1st elevator

Show description

Read Online or Download Bubble Gum and Hula Hoops: The Origins of Objects in Our Everyday Lives PDF

Similar reference books

The Penguin Atlas of Ancient History

The historic atlases through Colin McEvedy are all nice. The Atlas of old background isn't any exception.
If you're in any respect attracted to historical civilization, you wish this ebook on your assortment. simply turn via it and you'll observe how little you recognize concerning the international locations that molded eu and near-eastern culture.
This booklet does a superb task of summarizing the historical past of the eu, North African, and heart jap global and places it into one great package deal. i've got learn many books on Greek and Roman background, yet this ebook gave me an excellent assessment of what was once happening within the remainder of the realm additionally. It was once attention-grabbing to determine the ebb and circulate of peoples all through time within the numerous areas. My in simple terms proceedings have been the tasteless and occasionally complicated maps: black and white line drawings with an excessive amount of cross-hatching and shading to tell apart dozens of map components at a unmarried time.
McEvedy is an invaluable consultant into the plausibilities of pre-history, restraining himself from speculative enthusiasms, but delivering clean and engaging perspectives. because the trivia of background start to acquire, he maps advancements with the boldness that comes of encyclopedic wisdom, but with a lofty eye to the most and demanding tendencies. background too usually is taught as names and dates, and not using a experience of context. McEvedy's atlas sequence offers pretty much as good a sense for the Human tale of the final 9,000 years as might be squeezed into so few pages. humans expert by way of this sequence can plunge into disjoint stories of, say, the Etruscans or the Kassites, with a great tough notion of the place they healthy into the good scheme of items. (Amazon Reviewers)

The Cognitive Style of PowerPoint (2nd Edition)

This can be the second one variation. The PDF is a top quality machine publishing export, obtained as an booklet from Tufte’s website.

In company and govt bureaucracies, the normal technique for creating a presentation is to discuss a listing of issues prepared onto slides projected up at the wall. for a few years, overhead projectors lit up transparencies, and slide projectors confirmed high-resolution 35-mm slides. Now “slideware” laptop courses for shows are approximately all over. Early within the twenty first century, numerous hundred million copies of Microsoft PowerPoint have been turning out trillions of slides each one year.

Alas, slideware usually reduces the analytical caliber of shows. particularly, the preferred PowerPoint templates (ready-made designs) frequently weaken verbal and spatial reasoning, and ordinarily corrupt statistical research. what's the challenge with PowerPoint? and the way will we enhance our displays?

Recommended Reference Materials for Realization of Physicochemical Properties. Density

Suggested Reference fabrics for consciousness of Physicochemical houses offers with instructed reference fabrics for recognition of physicochemical houses, together with water, mercury, 2,2,4-trimethylpentane, cyclohexane, and trans-bicyclo[4,4,0]decane for density size. Nomenclature and devices are given, and the equipment of size are defined.

Extra info for Bubble Gum and Hula Hoops: The Origins of Objects in Our Everyday Lives

Example text

1 Theorem. Let G be cyclic. Then the canonical homo- LZ/m morphisms are isomorphisms. Proof. We first show that JO(G) of dimension functions. 4 whenever ~ \' d~k we obtain LZ/m is two-dimensional and one-dimensional otherwise. 3 Lemma. A function Dim kid LZ/d. dimV(d). u(d)n(LZ/kd). An irreducible real representation of if 2: C(G) n E C(G) is contained in the image of if and only if u(d)n(LZ/kd) _ 0 mod 2 'm/k I > 2. Proof of the Le~~. 2) and the remarks thereafter the con- gruences are necessary.

Then the following holds. 11 Theorem. X has the G-homotopy type of a finite complex if and only if for every element n(H) H ( G such that is a pt-1_ th power Proof. TOM DIECK [1985]. G, G/H is non-cyclic the mod pt = [G/HI. 31 5. Cyclic groups. 1 Theorem. Let G be cyclic. Then the canonical homo- LZ/m morphisms are isomorphisms. Proof. We first show that JO(G) of dimension functions. 4 whenever ~ \' d~k we obtain LZ/m is two-dimensional and one-dimensional otherwise. 3 Lemma. A function Dim kid LZ/d.

S n Thus if there exists a homotopy equivalence, then the stated congruence must hold. ) jO(G,f) 0 be the jO group of G-representations which are direct sums of faithful irreducible representations. :1 } , ~ j 0 (G , f) By lifting representations of m = I Gr. 9 Proposition. s = ~ jO(G). (cHIH ( G) jO(G/H,f) -7 jO(G) H~G is an isomorphism. bH:jO(G) -7 jO(G/H). Proof. Taking H--fixed paints defines a map bHc K = 0 jO(G/K,f) We have equals if H ~ K; -p jO(G/K) 7 and for H ( K jO(G/H). this composition Clearly s is surjec- tive.

Download PDF sample

Rated 4.33 of 5 – based on 8 votes