Deze dag was de verjaardag van Rika van der Veen – Spakman (06-08-1941 / 21-04-2025), de moeder van Margriet, John, A3 en partner van Klaas.
Zij is op 21 april 2025 in een hospice overleden.
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2025-04-21, Vaarwel Ma
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Wikipedia
Landlocked Developing Countries (LLDCs) lack territorial access to the sea, leaving them dependent on transit neighbors for a route to world markets.
This geographic disadvantage drives up transport costs, introduces avoidable delays, and exposes LLDCs to any political or economic instability along those corridors. The results are stark: Average transport costs are more than twice those of neighboring coastal states. Export opportunities shrink, foreign direct investment falls, and economic growth slows. When a transit country is itself a developing economy—often the case—intraregional trade remains modest. We are at a pivotal moment for the 32 LLDCs across Africa, Asia, Europe, and South America. Home to over 600 million people, LLDCs face steep development hurdles due to lack of sea access, geographical isolation, and trade costs that are 30% higher than those of coastal countries. To spotlight these challenges, the UN General Assembly has adopted a resolution proclaiming August 6 as the International Day of Awareness of the Special Development Needs and Challenges of Landlocked Developing Countries. The first celebration of this Day will take place during the Third Conference on Landlocked Developing Countries in 2025.
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Day of Awareness of the Special Development Needs and Challenges of Landlocked Developing Countries
Woensdag; Wat eten we vandaag?; ZDF censureert anti-fascistisch lied; Zon.
Wat eten we vandaag?:
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In de geschiedenis
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Wikipedia
Answering the question “Are we alone?” requires atmospheric spectroscopy of nearby terrestrial planets, scientists conclude in the report ‘Life 2.0: A Scalable Distributed Space-Telescope Array for Biosignature Spectroscopy‘.
For an Earth–Sun analog, even the strongest transmission signals are expected to be of order 1 part per million (ppm). Unlike short-period planets, Earth 2.0 planets transit only about once per year, so single-transit sensitivity, rather than stacking repeated observations, is the fundamental design driver. Life 2.0 is a scalable space-mission concept linking Earth 2.0 candidates discovered by PLATO and the Earth 2.0 (ET) mission with atmospheric characterization and biosignature assessment. The baseline architecture comprises 900 one-meter space telescopes, each equipped with a high-throughput Waveguide Integrated Miniature Spectrograph and an ultra-low-read-noise CMOS detector. After independent calibration, spectra acquired simultaneously during a transit are combined, providing the photon-collecting capability of an approximately 30-m aperture at the selected spectral resolution while retaining a modular architecture. The baseline 0.2–1.05 μm range covers O3, O2, H2O, Rayleigh scattering, and other diagnostics, with extension into the infrared as detector technologies mature. Prototype Waveguide Spectral Lens devices have demonstrated 40–66% throughput at resolving powers from R∼200 to R∼20,000. Lightweight silicon-carbide mirrors and sub-electron-noise CMOS detectors support replicated production. Life 2.0 must address detector systematics, instrument stability, and stellar variability; rather than assuming these limitations disappear, it builds on calibration, detector-characterization, and data-analysis techniques advanced during the JWST era. The concept offers a scalable alternative to a monolithic 30-m-class space telescope and a staged pathway toward biosignature spectroscopy of nearby Earth-like planets.
NSF Inouye Solar Telescope Enables Major Discovery of a Hidden Solar Process.
Scientists using the U.S. National Science Foundation (NSF) Daniel K. Inouye Solar Telescope published the artice ‘Ubiquitous Kelvin–Helmholtz instabilities driving plasma mixing on the Sun‘ about a major breakthrough in solar physics, discovering Kelvin-Helmholtz Instability on the surface of the Sun — a finding that could help explain explosive solar activity and other solar phenomena. Using the world’s most powerful solar telescope, the NSF Daniel K. Inouye Solar Telescope near the summit of Maui’s Haleakalā, combined with computer simulations, an international team of scientists from the NSO, NSF NCAR High Altitude Observatory (HAO), and the Max Planck Institute for Solar System Research (MPS) found the signature of Kelvin-Helmholtz instability (KHI), tiny swirling patterns like small whirlpools, on the Sun’s surface. Researchers suggest that KHI might be a key reason why the Sun’s outer atmosphere gets so hot, and why magnetic energy builds up and moves around on the Sun. Magnetic energy fuels solar flares and eruptions—the kind of solar activity that can send bursts of energy toward Earth and affect satellites, power grids, and other technology. The discovery opens a new window into the fundamental physics of the Sun and other stars while underscoring the unmatched capabilities of the Inouye Solar Telescope.
Dinsdag; Wat eten we vandaag?; Frans Timmermans; KNMI Code Geel.
Wat eten we vandaag?:
Knipselkrant:
Weer:
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In de geschiedenis
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Wikipedia
World Photography Day is an annual, worldwide celebration of the art, craft, science and history of photography will take place on Wednesday, August 19th, 2026 and World Photography Week is the annual celebration of photography that takes place from August 12th, to August 26th, 2026.
Be sure to share your best photos on social media and tag using #WorldPhotographyDay. You can participate in World Photography Day and help support photography everywhere, whether or not you have a photo to share! Search for posts using the tag #WorldPhotographyDay on August 19th, on the social medium of your choice, and “Like”, comment and share the photos that resonate with you the most. If you discover a photographer whose work you appreciate, be sure to give them a follow on social media, as well. WorldPhotographyDay.com is currently accepting submissions for photos to be featured on World Photography Daily, for the world to appreciate. The World Photography Day 2026 theme is “HOME“.
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World Photography Day
