Science Fact Friday: Bird Lungs! Just Like Every Other Part Of A Bird, They’re Weird.

Bones are interesting because you can sometimes read the patterns of wear and growth like reading a book.

I got a couple of stray cat skulls, and this guy has a pretty interesting story to him.

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Human fingers can detect nano-size objects. This means you not only have the ability to feel a tiny bump the size of a large molecule, but if your finger was the size of Earth, you could determine the difference between a house and a car. Source

You’ll wonder how you ever lived without this charming social robot

The dihydrogen monoxide hoax involves calling water by the unfamiliar chemical name “dihydrogen monoxide” (DHMO), and listing some of water’s effects in an alarming manner, such as the fact that it accelerates corrosion and can cause severe burns. The hoax often calls for dihydrogen monoxide to be regulated, labeled as hazardous, or banned. It illustrates how the lack of scientific literacy and an exaggerated analysis can lead to misplaced fears.

The hoax gained renewed popularity in the late 1990s when a 14-year-old student collected anti-DHMO petitions for a science project about gullibility. The story has since been used in science education to encourage critical thinking and avoid the appeal to nature.

Forty-three students favored banning DHMO, six were undecided, and only one correctly recognized that ‘dihydrogen monoxide’ is actually plain old water.

Here’s the information he gave the students:

Dihydrogen monoxide is colorless, odorless, tasteless, and kills uncounted thousands of people every year. Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there. Prolonged exposure to its solid form causes severe tissue damage. Symptoms of DHMO ingestion can include excessive sweating and urination, and possibly a bloated feeling, nausea, vomiting and body electrolyte imbalance. For those who have become dependent, DHMO withdrawal means certain death.

Dihydrogen monoxide:

is also known as hydroxl acid, and is the major component of acid rain.

contributes to the “greenhouse effect.”

may cause severe burns.

contributes to the erosion of our natural landscape.

accelerates corrosion and rusting of many metals.

may cause electrical failures and decreased effectiveness of automobile brakes.

has been found in excised tumors of terminal cancer patients.

Contamination is reaching epidemic proportions!

Quantities of dihydrogen monoxide have been found in almost every stream, lake, and reservoir in America today. But the pollution is global, and the contaminant has even been found in Antarctic ice. DHMO has caused millions of dollars of property damage in the midwest, and recently California.

Despite the danger, dihydrogen monoxide is often used:

as an industrial solvent and coolant.

in nuclear power plants.

in the production of styrofoam.

as a fire retardant.

in many forms of cruel animal research.

in the distribution of pesticides. Even after washing, produce remains contaminated by this chemical.

as an additive in certain “junk-foods” and other food products.

Companies dump waste DHMO into rivers and the ocean, and nothing can be done to stop them because this practice is still legal. The impact on wildlife is extreme, and we cannot afford to ignore it any longer!

The American government has refused to ban the production, distribution, or use of this damaging chemical due to its “importance to the economic health of this nation.” In fact, the navy and other military organizations are conducting experiments with DHMO, and designing multi-billion dollar devices to control and utilize it during warfare situations. Hundreds of military research facilities receive tons of it through a highly sophisticated underground distribution network. Many store large quantities for later use.

Source: [x]

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Fibonacci trefoil

© Rafael Araujo

Hi I made this app called PhysicsPedia. It contains all the theory and formulas of high school and college physics. Please have a look. https://play.google.com/store/apps/details?id=com.pp.nikit.phyprac2

Editor’s Note:

Thank you for your submission android-nikit  and we did check the app out and it is really interesting and useful. If you are in high school, we recommend you give this one a try!

Chances of hypersonic travel heat up with new materials discovery

Researchers at The University of Manchester in collaboration with Central South University (CSU), China, have created a new kind of ceramic coating that could revolutionise hypersonic travel for air, space and defense purposes.

Hypersonic travel means moving at Mach five or above, which is at least five times faster than the speed of sound. When moving at such velocity the heat generated by air and gas in the atmosphere is extremely hot and can have a serious impact on an aircraft or projectile’s structural integrity. That is because he temperatures hitting the aircraft can reach anywhere from 2,000 to 3,000 °C.

The structural problems are primarily caused by processes called oxidation and ablation. This is the when extremely hot air and gas remove surface layers from the metallic materials of the aircraft or object travelling at such high speeds. To combat the problem materials called ultra-high temperature ceramics (UHTCs) are needed in aero-engines and hypersonic vehicles such as rockets, re-entry spacecraft and defence projectiles.

But, at present, even conventional UHTCs can’t currently satisfy the associated ablation requirements of travelling at such extreme speeds and temperatures. However, the researchers at The University of Manchester’s and the Royce Institute, in collaboration with the Central South University of China, have designed and fabricated a new carbide coating that is vastly superior in resisting temperatures up to 3,000 °C, when compared to existing UHTCs.

The Magnus Effect is cool! Learn more about it in @veritasium video: https://youtu.be/2OSrvzNW9FE

A portal to another universe ?

That my dear friends is a CT scan machine. Stripped off all the body parts, you can see clearly see what goes on inside.

A computerized tomography (CT) or computerized axial tomography (CAT) scan combines data from several X-rays to produce a detailed image of structures inside the body.

                                            CT scan of Brain

Pretty cool, don’t you think ?

Extras

Difference between MRI and CT scan

Why dont you spin the patient instead ? - Awesome reddit thread

Better quality gifs : here

Source Video: Micheal Jonnson