Ricinus communis – Castor oil plant

Ricinus communis - Southern MexicoRicinus communis - Botanic Garden (Frankfurt, Germany)Ricinus communis - Venezuela
 
 
 
 
 
Ricinus communis - Castor oil plant (1)Ricinus communis - Castor oil plant (2)

Ricinus communis – Castor oil plant

Ricinus communis – It probably comes from the north of Africa. It is a 10-meter tall plant that enjoys great popularity in gardening.

  • Deadly dose: 15 – 20 seeds
  • Death: to 1 week
  • Poison: ricin
  • Aftermath: renal, liver and spleen failure
  • Where it grows: in all tropical and subtropical areas of the world
  • Occurrence in Poland: artificially bred

The most dangerous are the bars of its seeds, about 6,000 times more aggressive than cyanide. Causes agglutination of red blood cells and damages the liver, kidneys and spleen. The first symptoms are similar to a cold, followed by headaches, mouth burning, vomiting and internal bleeding. It gradually attacks the entire human circulatory system.

History of the plant:
Castor oil is squeezed from the seeds, from which soap, ointments, drops or perfumes are made. Apparently Cleopatra applied it to her eyes to have a “wider perspective”. In 1978, a Bulgarian secret interview was used to murder the writer and journalist Georgie Markov, who after several days of the fight for his life died of kidney failure in a London hospital.

Atropa belladonna – Most dangerous in Central Europe

Atropa belladonna - Botanic Garden - Leipzig, GermanyAtropa belladonna (2)Atropa belladonna (3)Atropa belladonna (4)

Atropa belladonna – Most dangerous in Central Europe

Atropa belladonna – This plant is considered the most dangerous in Central Europe. Its all parts are very toxic.

  • Deadly dose: 10 – 12 fruits
  • Death: in few hours
  • Poison: atropine, hyoscyamine
  • Aftermath: nervous system and heart rate weakness, stopping breathing
  • Where it grows: most of Europe, some places in Africa and Asia
  • Occurrence in Poland: yes

The big danger lies in the fact that its shiny fruits can be easily confused with edible forest fruits. Man can poison not only through direct consumption, but also through goat’s milk or meat, if animal earlier ate it. Typical symptoms of poisoning are dilated pupils, an accelerated pulse or redness on the face. There may also be hallucinations and loss of consciousness.

History of the plant:
Atropa belladonna was a component of shampoo drinks and ointments, because after applying to the skin it caused hallucinations – a man seemed to be able to fly.
In ancient Rome, the wives of Emperor Augustus and Claudius poisoned them with a shout. Medieval women applied drops of juice to their eyes. It was to guarantee them beautiful, large eyes. In this way, they risked not only conjunctivitis and eye deterioration, but death as well. Atropine in eye tests doctors are using today.

VR may cause vomiting – Because of motion sickness

VR may cause vomiting - VR-Helm

VR may cause vomiting – Because of motion sickness

VR may cause vomiting – Because of motion sickness – In order to fully enter the virtual reality,
one has to deceive not only the eyes but also the other senses.
This is also the reason why
many virtual reality users can cause problems with motion sickness.
Then the impressions
received by the liar do not agree with the visual stimulus.
In motion sickness,
the eyes see that the body is not moving, and that the labyrinth registers continuous motion,
tilting and acceleration, in the case of nausea caused by virtual reality is quite the opposite.

Eyes see the perfect simulation of space, covering the entire field of view.

However, the brain does not record any motion signals from the labyrinth or other senses.

In both cases there is a sensual dissonance that causes malaise, dizziness, fatigue,
and even vomiting.

Implants German scientists

Implants German scientists - Retinal anatomy

Implants German scientists

Implants German scientists – Researchers at the University of Tübingen in Germany made a breakthrough discovery. Those who have lost their sight due to degenerative disease of the lens, it will be able to regain at least in part. The researchers performed a special implant after implantation which people will recognize shapes of objects or characters.

Eye evolution – Development of sight

Eye evolution

Eye evolution – Development of sight

Eye evolution – Development of sight – We see the world around us through opsins – proteins containing photosensitive dyes, produced by the receptors of the retina. In humans and other animals with type chordates Branchiostoma lanceolatum, fish, amphibian, reptile or bird. The variety is known as copsin. Meanwhile, in arthropods and cephalopods so the spiders and octopuses. This is the function differently built r-opsin. So it looks as if nature created two different ways of development of sight, at a very early stage of evolution.

Sex influence on advertising

Sex influence on advertising - Circa 1975 Wonderbra

Sex influence on advertising

Sex influence on advertising – It has been shown that sex enhances the effects of advertising but only for men. The American magazine Adweek magazine conducted a study of the device that controlled the movements of the eye. They show that the bare ads more pleasing to men, whereas in women cause resentment and embarrassment.

Photoreceptors in retina

Photoreceptors in retina - Human Eyeball

Photoreceptors in retina

Photoreceptors in retina – Scientists have discovered that a little-known type of photoreceptor cells in the retina, the name on ipRGCs, plays an important role in distinguishing between darkness and light, which is crucial to the formation of images. The cells in the retina are divided into rods and cones. The human retina is 7 million cones and 130 million rods.