Some cells are visible to the unaided eye
The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny.

Smaller cells are easily visible under a light microscope. It’s even possible to make out structures within the cell, such as the nucleus, mitochondria and chloroplasts. Light microscopes use a system of lenses to magnify an image. The power of a light microscope is limited by the wavelength of visible light, which is about 500 nm. The most powerful light microscopes can resolve bacteria but not viruses.

Welcome to the Earth Impact Effects Program: an easy-to-use, interactive web site for estimating the regional environmental consequences of an impact on Earth. This program will estimate the ejecta distribution, ground shaking, atmospheric blast wave, and thermal effects of an impact as well as the size of the crater produced.

The career path of sultry R&B artist Amel Larrieux (appearing at the Birchmere September 10 and 11) has always been closely intertwined with her personal life. During a recent telephone interview from her New York City home, the 36-year-old former lead vocalist for the ’90s hip-hop duo Groove Theory admits, “I wouldn’t want it any other way.”

I’ve been pretending in my head that I’m a newspaper exec. When I do that I keep beating myself around the face. Why? Because the newspaper industry keeps giving the geeks free meals. Let’s study the free meals.

Первая половина лета — время отсутствия билетов в кассах Ленинградского вокзала. Ездить в это время в Питер — такая же сезонная забава москвичей, как путешествие в Крым в августе или первый выезд на дачу на майские. Белые ночи, едва начавшиеся студенческие каникулы и первая серьезная жара делают миграцию населения на северо-запад массовой, если не сказать полной. Несмотря на то что с 15 по 17 июля в Петербурге пройдет встреча глав государств G8 (с сопутствующими ограничениями на въезд), традицию так просто не переломить. На следующих страницах — материалы о том, что делать в Питере этим летом: где танцевать, как найти нужную лавку старьевщика, куда съездить, чтоб отдохнуть у моря, и как не опоздать к разводу мостов

Арифметичка. Логические задачи, головоломки, тесты на интеллект, логические игры

This isn’t a complicated vocabulary, with thousands of words. Nonetheless, it’s clear that for many animals, alarm calls are more than simple squawks of fear. Vervet monkeys, for instance, use different sounds to warn of different types of predator. “Leopard!” is not the same as “snake!” or “eagle!” If you hide a loudspeaker in the bushes, and startle unsuspecting monkeys by playing recordings of “snake!” at them, they will look around at the ground. “Eagle!” makes them look up. “Leopard!” sends them scampering to the trees.

Il musicista Fabio Pianigiani e il progetto di registrare il paesaggio sonoro: dal canto del gallo al calpestio dei passi

Антибуки — это вывернутые книжки, которые снаружи выглядят совсем не так, как внутри. Пассажиры напротив удивляются и смущенно отворачиваются? Антибуки — это Ваш личный праздник прямо в общественном транспорте.

Thousands of web forums and sites propose the belief that sometime in the early years of the 21st century, a previously undiscovered planet will collide with or pass very close to the Earth destroying civilisation or causing a massive planetary cataclysm.

Nintendo didn't hand out their seals of approval like they were tax-free candy. Well all right, when quality was the issue, they didn't discriminate much. In fact, it wouldn't surprise me one bit if the managements of Nintendo and Sega had a bet running about who could let the most games through each year. But when it came to inappropriate graphical elements or politically inflamed topics, Nintendo would demand green blood and renaming of characters and countries so fast it would knock the wax out of your ears.

Dark ads are usually used to portray a scary situation, or a serious issue, creating a dramatic impact.
Surprisingly, there are many dark ads that are humorous, creating a strong contrast between darkness and humor.
In the post, you’ll find 40 absolutely stunning ads with dark singularities and creative lighting effects.

Tori's eye is a Twitter visualization tool, inspired by papercraft and origami. It's a visual and technical experiment implemented using only standard XHTML/CSS and Javascript.

With 16 languages and 19 countries, the Fake Name Generator is the most advanced name generator on the internet. Generate names, addresses, social security numbers, credit card numbers, occupations, UPS tracking numbers, and more absolutely free.

Threadless graphic t-shirt designs; cool & funny t-shirts weekly! Tees designed by the community.

We’ve created a litttle experiment which loads 100 tweets related to HTML5 and displays them using a javascript-based particle engine. Each particle represents a tweet – click on one of them and it’ll appear on the screen.

Cepstral Voices can speak any text they are given, with the voice you choose. Try out a sample of some of the voices that we currently have available. We are building new synthetic voices for Text-To-Speech (TTS) every day, and we can find or build the right one for any application.

Red Nose Day is, quite simply, a day like no other! We take some fantastic fundraising in schools, offices and homes across the land, mix it with the nation’s favourite celebrities getting up to all kinds of mischief, sprinkle a new Red Nose (or three!) across the entire UK and add a cracking night of comedy on BBC One to make Red Nose Day the phenomenon it is.

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