Visualizing the Speed of Light
With the flip of a switch, your room can be instantenously flooded with brightness.
In fact, there is no noticeable lag effect at all.
That’s because emitted photons travel at 186,000 miles (300,000 km) per second, meaning it takes only 1/500,000th of a second for light to reach even the furthest part of an ordinary room. And, if it could go through the wall, it would orbit the entire planet 7.5 times in just one second.
Light Speed is Fast…
In our every day experiences, we never see light as having to “take time” to do anything. It’s inconceivably fast, brightening up everything in its path in an instant — and with a few odd caveats, scientists believe light speed to be the fastest-known achievable pace in the universe.
But what if we get out of our bubble, and look at light from outside the confines of life on Earth?
Today’s animation, which comes from planetary scientist Dr. James O’Donoghue, helps visualize the speed of light in a broader context. It helps remind us of the mechanics of this incredible phenomenon, while also highlighting the vast distances between celestial bodies — even in our small and insignificant corner of the solar system.
Light Speed is Slow…
Once a photon is sent into the vast abyss, suddenly the fastest possible speed seems somewhat pedestrian.
- Moon: It takes about 1.255 seconds for light to get from Earth to the moon.
- Mars: Mars is about 150x further than the moon — about 40 million miles (54.6 million km) in the closest approach — so it takes 3 minutes to get there from Earth.
- Sun: The sun is 93 million miles (150 million km) away, meaning it takes 8 minutes to see its light.
Let that sink in for a moment: the sun could explode right now, and we wouldn’t even know about it for eight long minutes.
Going Further, Taking Longer
If it takes light a few minutes to get to the closest planets, how long does it take for light to travel further away from Earth?
- Jupiter: The largest planet is 629 million km away when it’s closest, taking light about 35 minutes.
- Saturn: The ringed planet is about as twice as far as Jupiter, taking light 71 minutes.
- Pluto: It takes about 5.5 hours for light to go from Earth to the dwarf planet.
- Alpha Centauri: The nearest star system is 4.3 light years away, or 25 trillion miles (40 trillion km).
- Visible stars: The average distance to the 300 brightest stars in the sky is about 347 light years.
If you really want to get the feeling of how “slow” light really is, watch the below video and journey from the sun to Jupiter. It’s done in real-time, so it takes about 43 minutes:
So while light obviously travels at a ludicrous speed, it really depends on your vantage point.
On Earth, light is instantaneous – but anywhere else in the universe, it’s pretty inadequate for getting anywhere far (especially in contrast to the average human lifespan).
Mapping The Biggest Companies By Market Cap in 60 Countries
Tech, finance or energy giant? We mapped the biggest companies by market cap and industry.
The Biggest Companies By Market Cap in 60 Countries
Tech giants are increasingly making up more of the Fortune 500, but the world’s biggest companies by market cap aren’t so cut and dry.
Despite accounting for the largest market caps worldwide—with trillion-dollar companies like Apple and contenders including Tencent and Samsung—tech wealth is largely concentrated in just a handful of countries.
So what are the biggest companies in each country? We mapped the largest company by market cap across 60 countries in August 2021 using market data from CompaniesMarketCap, TradingView, and MarketScreener.
What are the Largest Companies in the World?
The world has 60+ stock exchanges, and each one has a top company. We looked at the largest local company, since many of the world’s largest firms trade on multiple exchanges, and converted market cap to USD.
|Country||Company||Industry||Market Cap (August 2021)|
|Saudi Arabia||Saudi Aramco||Energy||$1.9T|
|Belgium||Anheuser-Busch Inbev||Consumer Staples||$122.7B|
|Indonesia||Bank Cental Asia||Financials||$54.8B|
|Philippines||SM Investments||Consumer Cyclical||$22.9B|
|Kuwait||Kuwait Finance House||Financials||$21.9B|
|Czech Republic||ÄŒEZ Group||Energy||$15.8B|
|Poland||PKO Bank Polski||Financials||$12.6B|
|Bahrain||Ahli United Bank||Financials||$8.6B|
|Egypt||Commercial International Bank||Financials||$5.9B|
Many are former monopolies or massive conglomerates that have grown in the public space, such as South Africa’s Naspers and India’s Reliance Industries.
Others are local subsidiaries of foreign corporations, including Mexico’s Walmex, Chile’s Enel and Turkey’s QNB Finansbank.
But even more noticeable is the economic discrepancy. Apple and Saudi Aramco are worth trillions of dollars, while the smallest companies we tracked—including Panama’s Copa Group and Oman’s Bank Muscat—are worth less than $5 billion.
Finance and Tech Dominate The Biggest Companies By Market Cap
Across the board, the largest companies were able to accumulate wealth and value.
Some are newer to the top thanks to recent success. Canada’s Shopify has become one of the world’s largest e-commerce providers, and the UK’s AstraZeneca developed one of the world’s COVID-19 vaccines.
But the reality is most companies here are old guards that grew on existing resources, or in the case of banks, accumulated wealth.
|Industry||Biggest Companies by Country|
Banks were the most commonly found at the top of each country’s stock market. Closely behind were oil and gas giants, mining companies, and former state-owned corporations that drove most of a country’s wealth generation.
But as more economies develop and catch up to Western economies (where tech is dominant), newer innovative companies will likely put up a fight for each country’s top company crown.
All World Languages in One Visualization
See the world’s major languages broken down by country in this stunning visualization.
All World Languages, By Native Speakers
View a high resolution version of today’s graphic by clicking here.
Languages provide a window into culture and history. They’re also a unique way to map the world – not through landmasses or geopolitical borders, but through mother tongues.
The Tower of Babel
Today’s infographic from Alberto Lucas Lopez condenses the 7,102 known living languages today into a stunning visualization, with individual colors representing each world region.
Only 23 languages are spoken by at least 50 million native speakers. What’s more, over half the planet speaks at least one of these 23 languages.
Chinese dominates as a macrolanguage, but it’s important to note that it consists of numerous languages. Mandarin, Yue (including Cantonese), Min, Wu, and Hakka cover over 200 individual dialects, which vary further by geographic location.
|Country||Native Chinese speakers (millions)|
|🇭🇰 Hong Kong SAR||6.5|
|🇲🇴 Macau SAR||0.5|
Chinese is one of the most challenging languages for English speakers to pick up, in part due its completely unfamiliar scripts. You’d have to know at least 3,000 characters to be able to read a newspaper, a far cry from memorizing the A-Z alphabet.
Spanglish Takes Over
After Chinese, the languages of Spanish and English sit in second and third place in terms of global popularity. The rapid proliferation of these languages can be traced back to the history of Spanish conquistadors in the Americas, and British colonies around the world.
Animation: Map of Colonization (1492 – 2008):
Today, Spanish has 399 million native speakers, but these are mostly concentrated in Latin America. English has 335 million native speakers under its belt, with a widespread reach all over the globe.
Two Worlds, One Family
While the visualization makes all the world languages seem disparate, this linguistic family tree shows how they grew from a common root. It also explains how languages can evolve and branch out over time.
Created by Minna Sundberg. Full version.
This linguistic tree also includes many languages that are not on the large visualization of 23 mother tongues. Some of them might be considered endangered or at risk today, such as Catalan or Welsh. However, with globalization, a few interesting linguistic trends are arising.
1. Language revival
Certain enclaves of marginalized languages are being preserved out of pride for the traditional and cultural histories attached.
While Catalan was once banned, its rebirth is a key marker of identity in Barcelona. More than 150 universities teach Catalan worldwide. In the case of Welsh, a mammoth university project plans to make sure it does not die out. Researchers are compiling ten million Welsh words to preserve the past, present, and future of the language.
2. Language forecast
At this point in time, English is the lingua franca – adopted as a common language among speakers with different mother tongues. However, this status might soon be fuzzier as demographic trends continue.
The rise of China is an obvious one to consider. As China continues to increase its economic might and influence, its languages will proliferate as well.
At the same time, 26 African countries are projected to double their current size, many of which speak French as a first language. One study by investment bank Natixis suggests that Africa’s growth may well bring French to the forefront – making it the most-spoken language by 2050.
Could French provide a certain je ne sais quoi that no other world language can quite replace?
This post was first published in 2018. We have since updated it, adding in new content for 2021.
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